STOCK TITAN

May 2021 Stock Gainers on News

Ranked by the close-to-close change of the trading session each announcement landed in. How this is measured.

Data through the session. 19 of 20 completed market sessions produced ranked moves. That date is the last ranked session, not the last priced one, so follow-through dates run later.

On 100 of these rows the measured session was reconstructed from the announcement time, because it predates our stored session records.

See the biggest losers of May 2021 Every stock ranked by its May 2021 gain, with or without news

100

Ranked gains

+171.98%

Largest, PRPO

94.0%

Events still above the pre-news close, day +5

5.5%

Median give-back, day +5

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Rows

100 ranked gains in May 2021

Skip the ranked rows and go to the month summary

Every percentage on a row, the follow-through readings included, is measured against that row's own pre-news close, which the row names. A day +5 reading is therefore the move from before the announcement, not a further change on top of the headline percentage.

Rows are ordered by the move measured when the board was ranked. A percentage recomputed from the session's own closing prices can sit a little above or below its neighbours; the rank is the one the measured move gave the row.

Rank Symbol close to close Session Catalyst Announcement
1 PRPO +171.98% against the close of 04/30/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Precipio Launches its Rapid COVID-19 Antibody test on Amazon Platform

09:30 ET intraday

2 VTNR More than one ranked move this month 2+ ranked moves +124.16% against the close of 05/26/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Vertex Energy To Acquire Alabama Refinery and Related Logistics Assets

16:30 ET after hours

3 PIRS +103.24% against the close of 05/24/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnership Pieris Pharmaceuticals Announces Respiratory and Ophthalmology Collaboration with Genentech

08:00 ET premarket

4 MMAC +57.66% against the close of 05/21/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Fundamental Advisors to Acquire MMA Capital Holdings in All-Cash Transaction

08:30 ET premarket

5 SNMP +53.52% against the close of 05/14/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnership Evolve Announces Agreement with Nuvve and Stonepeak to Pursue a $750 million Joint Venture, “Levo,” to Deploy Turnkey Electric Vehicle Charging and Transportation-as-a-Service for School Buses and other Commercial Fleets

08:45 ET premarket

6 HYRE +44.57% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings HyreCar Announces Record First Quarter 2021 Financial Results

16:01 ET after hours

7 LHDX Also on the opposite board this month on both boards +44.20% against the close of 05/11/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement LUCIRA™ CHECK IT COVID-19 Self-Test Now Available on Amazon

06:00 ET premarket

8 ARPO +43.10% against the close of 05/14/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Aerpio Pharmaceuticals and Aadi Bioscience Enter into a Definitive Merger Agreement

07:00 ET premarket

9 GOED Also on the opposite board this month on both boards +40.51% against the close of 05/26/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement 1847 Goedeker Announces it's Unaware of Reason for Stock Volatility

11:30 ET intraday

10 RZLT +40.31% against the close of 05/26/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Rezolute to Participate in Upcoming Virtual Healthcare Conferences

07:00 ET premarket

11 CHMA +40.14% against the close of 05/04/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Amryt Pharma to Acquire Chiasma, Inc. to Further Strengthen Global Leadership in Rare and Orphan Diseases

07:00 ET premarket

12 BBW +39.31% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Build-A-Bear Workshop, Inc. Reports Increased Revenues and Pre-Tax Income in Fiscal 2021 First Quarter Exceeding Both 2020 and 2019 First Quarter Results and Raises Annual Guidance

06:45 ET premarket

13 STIM +39.21% against the close of 05/03/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Neuronetics Reports First Quarter 2021 Financial and Operating Results

07:00 ET premarket

14 LQDT +37.69% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Liquidity Services Announces Second Quarter Fiscal Year 2021 Financial Results

06:50 ET premarket

15 VEL +36.61% against the close of 05/06/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Velocity Financial, Inc. Reports First Quarter 2021 Results

16:15 ET after hours

16 OMI +36.17% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Owens & Minor Outlines Long-Term Strategy to Drive Sustainable Growth at 2021 Investor Day

06:45 ET premarket

17 TYHT +35.93% against the close of 05/03/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Shineco, Inc. Proposes to Acquire 51% Equity Interests in Mayah Biological Holdings Limited

09:00 ET premarket

18 AUTL +35.47% against the close of 05/11/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Clinical Trial Results Autolus Therapeutics to Present New Data on AUTO1 in r/r Indolent B Cell Lymphomas at the European Hematology Association Virtual Congress

10:00 ET intraday

19 DDD +35.23% against the close of 05/10/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings 3D Systems Reports First Quarter 2021 Financial Results

16:30 ET after hours

20 MITO +35.00% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Stealth BioTherapeutics Showcases Data for Elamipretide in Dry Age-Related Macular Degeneration at the 2021 ARVO Annual Meeting

16:30 ET after hours

21 LFMD +34.87% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings LifeMD Reports Q1 2021 Revenue up 323% to Record $18.2M, Raises Full Year Revenue Guidance to $90-$100M

16:01 ET after hours

22 HFFG +32.82% against the close of 05/10/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings HF Foods Reports First Quarter 2021 Financial Results

16:01 ET after hours

23 BGFV +31.15% against the close of 05/04/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Big 5 Sporting Goods Corporation Announces Fiscal 2021 First Quarter Results

16:01 ET after hours

24 WISA +31.01% against the close of 05/11/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Summit Wireless Technologies Posts 181% Q1 2021 Revenue Increase and Guides for 250+% Q2 2021 Revenue Increase, Year-over-Year Respectively

07:00 ET premarket

25 TLC +30.27% against the close of 05/24/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
FDA & Regulatory TLC Announces Approval of New Drug Application of Liposomal Amphotericin B in India

05:05 ET premarket

26 SNSE +30.11% against the close of 05/19/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Clinical Trial Results Sensei Biotherapeutics Announces New Clinical Data from the Ongoing Phase 1/2 Combination Trial of SNS-301 in Patients with Squamous Cell Carcinoma of the Head and Neck

17:03 ET after hours

27 GVP +27.80% against the close of 05/21/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnership GSE and ABB Bailey Japan Announce First Project in Strategic Collaboration for the Japanese Energy Industry

09:00 ET premarket

28 CUE +27.71% against the close of 05/07/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Clinical Trial Results Cue Biopharma Reports Confirmed Partial Response (PR) in Ongoing Phase 1 Monotherapy Study of CUE-101 in Late Stage Second Line and Beyond Patients with HPV+ Recurrent/Metastatic Head and Neck Cancer

08:00 ET premarket

29 SPCE +27.62% against the close of 05/21/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Virgin Galactic Completes First Human Spaceflight from Spaceport America, New Mexico

12:59 ET intraday

30 AVID +27.08% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Avid Technology Announces First Quarter 2021 Results

16:05 ET after hours

31 PRVB Also on the opposite board this month on both boards +26.82% against the close of 05/24/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
FDA & Regulatory Provention Bio Announces Posting of Briefing Documents for FDA Advisory Committee Meeting on Teplizumab

09:30 ET intraday

32 LAIX +26.75% against the close of 05/26/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings LAIX Inc. Announces First Quarter 2021 Unaudited Financial Results

17:00 ET after hours

33 FF +26.74% against the close of 05/10/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Buyback / Dividend FutureFuel Corp. Declares Special Cash Dividend

16:28 ET after hours

34 PDSB +26.66% against the close of 05/19/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Clinical Trial Results PDS Biotech Announces Release of Abstract for PDS0101 in NCI-Led Phase 2 Clinical Study for Oral Presentation at 2021 ASCO Meeting

08:00 ET premarket

35 SMMT +26.62% against the close of 05/14/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Summit Therapeutics Reports Financial Results and Operational Progress for the First Quarter Ended March 31, 2021

08:00 ET premarket

36 WRN +26.22% against the close of 05/14/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnership Western Copper and Gold Announces C$25.6 Million Strategic Investment by Rio Tinto

08:07 ET premarket

37 SKYT +26.01% against the close of 05/19/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Efabless Launches chipIgnite With SkyWater To Bring Chip Creation to the Masses

09:05 ET premarket

38 WW release reads negative +25.92% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Release reads negative, stock rose 25.92% WW Announces First Quarter 2021 Results and Continued Strong Digital Subscriber Growth

16:01 ET after hours

39 SSTI +25.39% against the close of 05/11/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings ShotSpotter Reports First Quarter 2021 Financial Results

16:05 ET after hours

40 PDLB +24.78% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Offering / Dilution Rose on dilution Ponce Bank Mutual Holding Company and PDL Community Bancorp Announce Adoption of a Plan of Conversion and Reorganization, Related Second-Step Stock Offering and Funding of the Ponce De Leon Foundation

16:10 ET after hours

41 VSTM +24.76% against the close of 05/21/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
FDA & Regulatory Verastem Oncology Receives Breakthrough Therapy Designation for VS-6766 with Defactinib in Recurrent Low-Grade Serous Ovarian Cancer

07:00 ET premarket

42 NEGG +24.59% against the close of 05/18/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Newegg Commerce, Inc. (formerly Lianluo Smart Limited) Announces Consummation of Merger and Disposition

11:48 ET intraday

43 SOLY +24.50% against the close of 05/07/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Allergan Aesthetics to Acquire Soliton, Expanding Body Contouring Portfolio

08:30 ET premarket

44 FRD +24.36% against the close of 05/24/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Friedman Industries Provides Fourth Quarter Earnings Guidance and Announces New Sinton Facility

09:00 ET premarket

45 GEVO +23.95% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Gevo Reports First Quarter 2021 Financial Results

16:01 ET after hours

46 TITN +23.90% against the close of 05/26/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Titan Machinery Inc. Announces Results for Fiscal First Quarter Ended April 30, 2021

06:45 ET premarket

47 FOE +23.89% against the close of 05/10/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Ferro Corporation to Be Acquired by Prince International Corporation for $22.00 Per Share in $2.1 Billion All-cash Transaction; Reports First Quarter Results

07:45 ET premarket

48 KRBP +23.82% against the close of 05/21/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
FDA & Regulatory Kiromic Announces FDA IND Submission First-In-Human, AI derived Off-The-Shelf IsoMesothelin Gamma Delta CAR T-cell Therapy, 30 Days Before the End of the Second Quarter

07:55 ET premarket

49 RETA +23.78% against the close of 05/18/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
FDA & Regulatory Reata Announces that The FDA Has Asked The Company to Request a Pre-NDA Meeting for Omaveloxolone for the Treatment of Friedreich’s Ataxia

06:45 ET premarket

50 OCGN Also on the opposite board this month on both boards +23.76% against the close of 04/30/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Ocugen announces studies showing COVAXIN potentially effective against three key variants of SARS-CoV-2  

07:30 ET premarket

51 AMC +23.74% against the close of 05/12/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Offering / Dilution Rose on dilution AMC Entertainment Holdings, Inc. Completes 43 Million Share At-The-Market Equity Offering and Raises $428 Million in Additional Equity Capital

11:42 ET intraday

52 CMT +23.50% against the close of 05/06/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Core Molding Technologies Reports Strong Q1 2021 Results

08:00 ET premarket

53 OSS +23.41% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings OSS Reports Q1 2021 Results; Improves Adjusted EBITDA by $2 Million on Expanded Gross Margins

16:04 ET after hours

54 ULBI +23.38% against the close of 05/17/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnership Ultralife Corporation Awarded IDIQ Contract Under U.S. Army’s $1.25B Conformal Wearable Battery Program

16:01 ET after hours

55 VTNR More than one ranked move this month 2+ ranked moves +23.19% against the close of 05/12/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Vertex Energy Reports First Quarter 2021 Results

06:00 ET premarket

56 PTE Also on the opposite board this month on both boards +23.18% against the close of 05/07/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement PolarityTE Announces Diabetic Foot Ulcer Trial Met Primary and Secondary Endpoint

08:00 ET premarket

57 BFRA +22.90% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Guidance Change Biofrontera reports preliminary revenue for the month of April 2021

07:23 ET premarket

58 MGI +22.78% against the close of 05/06/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings MoneyGram International Reports First Quarter 2021 Results

21:00 ET after hours

59 DDS +22.75% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Dillard’s, Inc. Reports First Quarter Results

16:15 ET after hours

60 TELL +22.71% against the close of 05/26/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnership Tellurian and Gunvor Sign 10-year LNG Agreement for 3 mtpa

06:59 ET premarket

61 CRCT +22.70% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Cricut, Inc. Reports First Quarter 2021 Financial Results

16:05 ET after hours

62 ATNX +22.64% against the close of 05/04/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition Athenex to Acquire Kuur Therapeutics to Expand Cell Therapy Development with Off-the-Shelf Engineered CAR-NKT Platform

17:04 ET after hours

63 USWS +22.59% against the close of 05/14/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings U.S. Well Services Announces First Quarter 2021 Financial and Operational Results

06:45 ET premarket

64 SRL +22.18% against the close of 04/30/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Scully Royalty Ltd. Provides Corporate Update And Announces Actions Seeking To Maximize Shareholder Value

16:57 ET after hours

65 DASH +22.15% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings DoorDash Releases First Quarter 2021 Financial Results

16:05 ET after hours

66 SUP +22.03% against the close of 05/04/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Superior Reports First Quarter 2021 Financial Results

07:00 ET premarket

67 CPS +21.92% against the close of 05/06/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Cooper Standard Reports Improved First Quarter Results; ROIC Enhancement Initiative Remains On Track

16:30 ET after hours

68 RXDX +21.76% against the close of 05/14/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Prometheus Biosciences to Present at 2021 RBC Capital Markets Global Healthcare Conference

16:01 ET after hours

69 HBP +21.72% against the close of 05/03/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Huttig Building Products, Inc. Announces Record First Quarter Net Earnings

17:00 ET after hours

70 KTRA +21.62% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Clinical Trial Results Kintara Therapeutics Provides Positive Site Activation Update on GCAR Phase 2/3 Clinical Trial for Glioblastoma

08:00 ET premarket

71 IPWR +21.42% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Ideal Power Reports First Quarter 2021 Financial Results

16:05 ET after hours

72 THRY +21.38% against the close of 05/26/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Offering / Dilution Rose on dilution Thryv Announces Pricing of Upsized Secondary Public Offering of Common Stock by Selling Stockholders

23:13 ET after hours

73 RBLX +21.33% against the close of 05/10/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Roblox Reports First Quarter 2021 Financial Results

16:06 ET after hours

74 BCRX +20.97% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings BioCryst Reports First Quarter 2021 Financial Results and Upcoming Key Milestones

07:00 ET premarket

75 PCYG +20.74% against the close of 05/17/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Park City Group Reports 30% Increase in Revenue, Net Income Increases 184% for Fiscal Third Quarter 2021

16:06 ET after hours

76 GRCL +20.70% against the close of 05/20/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Clinical Trial Results Gracell Biotechnologies to Host Clinical Update Conference Call and Webcast on June 4, 2021 at 11:00am EDT

08:00 ET premarket

77 MLSS +20.63% against the close of 04/30/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Guidance Change Milestone Scientific Reports Preliminary Sales Results for Q1 2021; Revenue Increases 61% Over the Same Period Last Year

08:30 ET premarket

78 AGEN +20.55% against the close of 05/17/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnership Agenus and Bristol Myers Squibb Announce Exclusive Global License for Agenus’ Anti-TIGIT Bispecific Antibody Program

07:30 ET premarket

79 BIOL +20.53% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings BIOLASE Reports 70% Revenue Growth In First Quarter 2021; Continued High Demand From New Users For Dental Lasers

16:05 ET after hours

80 HOME +20.49% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisition At Home Group Inc. to Be Acquired by Hellman & Friedman for $2.8 Billion

09:45 ET intraday

81 AGFY +20.47% against the close of 05/17/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Agrify Quarterly Revenue Increased 600% to Record $7 million for Q1 2021

07:00 ET premarket

82 BBQ +20.41% against the close of 05/19/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings BBQ Holdings, Inc. Reports Results for First Quarter 2021

16:21 ET after hours

83 GOLF +20.14% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Acushnet Holdings Corp. Announces First-Quarter 2021 Financial Results

06:27 ET premarket

84 SBH +20.04% against the close of 05/05/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Sally Beauty Holdings Reports Strong Sales, Gross Margin and Profit Growth For Fiscal 2021 Second Quarter Despite Pandemic Disruptions

06:45 ET premarket

85 FDP +19.99% against the close of 05/04/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Fresh Del Monte Produce Inc. Reports First Quarter 2021 Financial Results

05:45 ET premarket

86 MD +19.96% against the close of 05/06/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Mednax Reports First Quarter Results

06:00 ET premarket

87 FNKO +19.93% against the close of 05/06/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Funko Reports First Quarter 2021 Sales of $189 Million, Up 38%; Raises Full Year Outlook

16:05 ET after hours

88 VRTV +19.92% against the close of 05/21/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Buyback / Dividend Veritiv Increases Stock Repurchase Program by $50 Million, Expanding the Total to $100 Million

08:00 ET premarket

89 APLS +19.88% against the close of 05/14/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
FDA & Regulatory Apellis Announces U.S. Food and Drug Administration (FDA) Approval of EMPAVELI™ (pegcetacoplan) for Adults with Paroxysmal Nocturnal Hemoglobinuria (PNH)

18:25 ET after hours

90 ONDS +19.76% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Ondas Holdings Inc. to Hold Business Update Call Thursday Morning May 27th

07:00 ET premarket

91 REX +19.71% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings REX American Resources Reports Fiscal 2021 First Quarter Net Income Per Share Attributable to REX Common Shareholders of $1.30 Versus a Loss of $1.21 Per Share in the Year-Ago Period

07:00 ET premarket

92 VVNT +19.54% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Vivint Smart Home Grows New Subscribers by 20% while Accelerating Revenue Growth to 13%

16:12 ET after hours

93 YMAB +19.37% against the close of 05/06/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Y-mAbs Announces First Quarter Financial Results and Recent Corporate Developments

16:01 ET after hours

94 GTYH +19.27% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings GTY Technology Holdings Inc. Announces First Quarter Financial Results

16:05 ET after hours

95 ARNC +19.21% against the close of 05/03/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Arconic Reports First Quarter 2021 Results and Raises Outlook

06:45 ET premarket

96 AVIR +19.20% against the close of 05/13/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Atea Pharmaceuticals Reports First Quarter 2021 Financial Results and Provides Corporate Update

16:05 ET after hours

97 UFS +19.20% against the close of 05/03/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
No Stated Cause Domtar Responds to Press Speculation

10:40 ET intraday

98 INSE +19.05% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Offering / Dilution Rose on dilution Inspired Announces Launch Of Public Offering

16:05 ET after hours

99 SKY +18.87% against the close of 05/25/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Earnings Skyline Champion Announces Fourth Quarter and Full Year Fiscal 2021 Results

16:55 ET after hours

100 LTBR +18.75% against the close of 05/20/2021 session reconstructed
Session detail
Market cap is not shown on months older than a year, because only today's figure exists.
Other Announcement Lightbridge Corporation Reminds Stockholders to Vote at the Upcoming Annual Meeting

08:00 ET premarket

NYSE and Nasdaq companies with a market capitalization of $25M or more, measured today. The exchange is the one recorded on each announcement, and a release naming several tickers records one venue for all of them. A session that changed hands for less than $25,000 in total is not ranked, because a percentage set by a handful of shares is a print rather than a move. On a board older than a year a fund is identified by its name alone, because an instrument class describes whoever holds the ticker today. 404 smaller events this month are held out of this month's eligible pool; switch to include them. 131 events never entered this month's eligible pool, because the ticker is a warrant, a unit, a right or a preferred rather than common stock, or carries a stored capitalization above $10 trillion, which is larger than any company has reached. Include the $5M to $25M band

3 candidate events for this board could not be anchored to a trading session and are not listed.

1 event was left out of this board because the measured session set no price of its own, trading either nothing at all or barely moving on an ordinary day's volume, so the figure it would be ranked on is a price carried onto the tape rather than a close.

1 event was left out of this board because the ticker had not traded for more than 10 days before the measured session, so no comparable prior close exists.

Company names are not shown on months older than a year, because only the current holder of each ticker is known.

In May 2021, the median gainer had given back 5.5% of its move five sessions later; the largest catalyst group was Earnings, 47 of the 100 events, at a median of +22.7%.

Close-to-close change on the measured trading session, against the previous close.

NYSE and Nasdaq companies with a market capitalization of $25M or more, measured today. The exchange is the one recorded on each announcement, and a release naming several tickers records one venue for all of them. A session that changed hands for less than $25,000 in total is not ranked, because a percentage set by a handful of shares is a print rather than a move. On a board older than a year a fund is identified by its name alone, because an instrument class describes whoever holds the ticker today.

Which catalysts drove the board

Swipe the table sideways for the day +5 columns.

Catalyst Events Share of board Median move close to close Median at day +5 Still above the pre-news close at day +5
Earnings 47 47.0% +22.7% +24.1% 100.0% of 47
Other Announcement 15 15.0% +26.0% +14.9% 73.3% of 15
M&A / Acquisition 10 10.0% +30.3% +29.7% 100.0% of 10
Contract / Partnership 7 7.0% Fewer than 10 events in this group, so no figures are shown.
Clinical Trial Results 6 6.0% Fewer than 10 events in this group, so no figures are shown.

5 other catalyst types, 15 events: FDA & Regulatory, Offering / Dilution, Guidance Change, Buyback / Dividend, No Stated Cause.

How much of the move survived

Horizon Still above the pre-news close (close-to-close basis) Median change since the measured close as a share of the move
Day +1 98.0% of 100 2.2% given back, of 100
Day +5 94.0% of 100 5.5% given back, of 100
Month end 93.0% of 100 11.9% larger move, of 100
Month end falls before day +5 for 25 of these 100 events, so this row is not a later horizon than the one above it.

Repeat runners

Some companies move on news more than once. The left list holds the ones that moved twice or more this month; the right list holds the ones that also moved in the months before it. The ranking above shows one row per move, so a name that keeps coming back is only visible here.

Moved twice or more inside May 2021

Two or more ranked moves this month, each on a different trading day.

SymbolMeasured sessionsBest move
VTNR 2M&A / Acquisition, Earnings +124.16%

Also risen on news in earlier months

Ranked in at least two of the three months before this one. They are listed whether or not they rank this month, which is why the months are named.

SymbolMonthsBest move
GME 2021-04, 2021-03, 2021-02 +103.94%
SYPR 2021-04, 2021-02 +90.23%
MVIS 2021-04, 2021-02 +36.76%
GBOX 2021-04, 2021-02 +28.61%
TDC 2021-04, 2021-02 +37.08%
AFMD 2021-04, 2021-03 +23.77%
OCGNthis month too 2021-04, 2021-02 +201.14%
JCS 2021-04, 2021-03 +35.33%
RMTI 2021-04, 2021-02 +30.41%
NCTY 2021-03, 2021-02 +43.62%
SLGG 2021-03, 2021-02 +35.77%
CLPS 2021-03, 2021-02 +121.22%
LIZI 2021-03, 2021-02 +70.47%

What the board was made of

Price before the move

Price bands are not shown on months older than a year, because the stored prices are adjusted for splits done since and a company that has reverse-split lands in a band its shares never traded in.

When the announcement landed

  • Pre-market50.0%
  • Intraday9.0%
  • After hours41.0%

Volume against normal

  • Under 5x19 events, 19.0%
  • 5x to 20x39 events, 39.0%
  • Over 20x42 events, 42.0%

Industry

  • Pharmaceutical preparations11 events, 11.0%
  • Prepackaged software5 events, 5.0%
  • Biological products (excluding diagnostic substances)4 events, 4.0%
  • Industrial organic chemicals3 events, 3.0%
  • Semiconductors & related devices3 events, 3.0%
  • Business services, not elsewhere classified2 events, 2.0%

31 other industries, 35 events

Industry not known: 37.0%

1 event on this board carries the flag for a move that ran against its own release, too few to say whether the flag predicts anything.

Against April 2021

100 events from April 2021 in the comparable window.

April 2021 median +22.0%, selected from the 8,729 events in that month's eligible pool.

May 2021 median +23.8%, 1.8 points above April 2021. May 2021's median is taken over the 100 ranked rows, selected from the 9,100 events in that month's eligible pool.

How this ranking is measured

Close-to-close change on the measured trading session, against the previous close.

  • An announcement before 16:00 ET is measured on that trading day; one at or after 16:00 ET, or on a weekend, is measured on the next trading day.
  • One row per company and measured session. Other announcements the company made in the same session are listed inside the row.
  • A ranking is a coincidence of news and price on the same session, not proof that the news caused the move. Part of an intraday move can precede the announcement.
  • No Stated Cause marks a release in which the company itself says it knows of no reason for the move, while Other Announcement marks a release these rules could not classify.

Eligibility uses each company's capitalization today, not its capitalization at the time. Archive boards can therefore change as companies grow or shrink.

Prices are adjusted for stock splits the company has done since, so an older row's dollar figures are stated on today's share count and are not the prices that traded that day. The percentage move, the dollar volume and the relative volume are unaffected, because both prices carry the same adjustment. The session's share count carries the adjustment too, so the shares figure beside the dollar volume is that count restated on today's basis rather than the number of shares that changed hands. Where the ticker was retired the price series stops with it and no later adjustment reached it, so those rows are marked as traded and their dollars are the ones that changed hands on the day.

Market cap is not shown on months older than a year, because only today's figure exists.

NYSE and Nasdaq companies with a market capitalization of $25M or more, measured today. The exchange is the one recorded on each announcement, and a release naming several tickers records one venue for all of them. A session that changed hands for less than $25,000 in total is not ranked, because a percentage set by a handful of shares is a print rather than a move. On a board older than a year a fund is identified by its name alone, because an instrument class describes whoever holds the ticker today.

On 100 of these rows the measured session was reconstructed from the announcement time, because it predates our stored session records.

This archive starts at 2020-04, the first month with ranked moves.