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Top Stock Gainers May 2026 - Monthly Performance Ranked

The top US-listed stocks of May 2026 by monthly gain, on split-adjusted closes. Ranks 4,390 companies above $100M on NYSE, Nasdaq and NYSE American.
2026
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

May 2026 ranking, complete through May 29, 2026

Filter by sector or market cap, or find a symbol

The gain covers the period; price, market cap, sector and country show each company as it is today.

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Rank
Symbol
Company Name
May Gain
Market Cap (today)
Price (today)
Country
Sector
401
WDC
Western Digital Corp.
+22.25%
$128.64B
$343.67
United States
Technology
402
SKYT
SkyWater Technology, Inc.
+22.19%
$1.60B
$32.46
United States
Technology
403
NAVN
Navan, Inc.
+22.18%
$7.02B
$26.96
United States
Technology
404
ASYS
Amtech Systems Inc
+22.17%
$217.45M
$12.42
United States
Technology
405
RJET
Republic Airways Holdings Inc.
+22.15%
$793.12M
$16.94
United States
Industrials
406
ASX
ASE Technology Holding Co., Ltd.
+22.09%
$85.07B
$38.69
Taiwan
Technology
407
RUM
RUM Group Inc.
+22.05%
$2.26B
$5.64
United States
Communication Services
408
SA
Seabridge Gold, Inc.
+22.04%
$2.63B
$24.40
Canada
Basic Materials
409
IOVA
Iovance Biotherapeutics, Inc.
+22.02%
$6.38B
$14.09
United States
Healthcare
410
FICO
Fair Isaac Corporation
+22.01%
$17.61B
$815.31
United States
Technology
411
ATOM
Atomera Incorporated
+22.00%
$114.73M
$2.94
United States
Technology
412
AI
C3.ai, Inc.
+21.97%
$2.00B
$12.46
United States
Technology
413
NTSK
Netskope, Inc.
+21.89%
$9.92B
$24.28
United States
Technology
414
ATRO
Astronics Corp
+21.85%
$2.49B
$57.89
United States
Industrials
415
SUPX
SuperX AI Technology Limited
+21.85%
$268.08M
$6.20
Singapore
Technology
416
ASAN
Asana, Inc.
+21.84%
$2.75B
$12.02
United States
Technology
417
IOT
Samsara Inc.
+21.75%
$26.31B
$44.92
United States
Technology
418
AA
Alcoa Corporation
+21.71%
$10.01B
$37.91
United States
Basic Materials
419
EOLS
Evolus, Inc.
+21.71%
$463.01M
$7.01
United States
Healthcare
420
TTAN
ServiceTitan, Inc.
+21.70%
$8.40B
$87.06
United States
Technology
421
PRMB
Primo Brands Corporation
+21.69%
$7.13B
$19.69
United States
Consumer Defensive
422
AMRC
Ameresco, Inc.
+21.60%
$983.32M
$18.53
United States
Industrials
423
YETI
YETI Holdings, Inc.
+21.57%
$3.12B
$42.79
United States
Consumer Cyclical
424
TOI
The Oncology Institute, Inc.
+21.50%
$512.91M
$5.13
United States
Healthcare
425
MTLS
Materialise NV
+21.49%
$494.80M
$8.63
Belgium
Technology
426
HLIO
Helios Technologies, Inc.
+21.48%
$2.18B
$66.16
United States
Industrials
427
AIOT
PowerFleet, Inc.
+21.43%
$357.04M
$2.66
United States
Technology
428
INTC
Intel Corp
+21.38%
$459.68B
$86.96
United States
Technology
429
QSI
Quantum-Si Incorporated
+21.35%
$306.44M
$1.40
United States
Healthcare
430
VMET
Versamet Royalties Corporation
+21.35%
$895.67M
$8.23
Canada
Basic Materials
431
MT
ArcelorMittal
+21.32%
$44.69B
$59.43
Luxembourg
Basic Materials
432
DAL
Delta Air Lines, Inc.
+21.31%
$50.51B
$76.78
United States
Industrials
433
HRB
H&R Block, Inc.
+21.30%
$6.09B
$49.69
United States
Consumer Cyclical
434
VNET
VNET Group, Inc.
+21.30%
$1.06B
$3.72
China
Technology
435
ZGN
Ermenegildo Zegna N.V.
+21.29%
$3.62B
$13.48
Italy
Consumer Cyclical
436
RNAC
Cartesian Therapeutics, Inc.
+21.22%
$186.98M
$6.18
United States
Healthcare
437
OPLN
OPENLANE, Inc
+21.18%
$4.60B
$37.69
United States
Consumer Cyclical
438
ALGT
Allegiant Travel Company
+21.11%
$1.85B
$67.67
United States
Industrials
439
NUAI
New Era Energy & Digital, Inc.
+21.07%
$357.56M
$2.96
United States
Technology
440
ICL
ICL Group Ltd.
+20.95%
$6.08B
$4.77
Israel
Basic Materials
441
CGCT
Cartesian Growth Corporation III
+20.83%
$492.66M
$11.90
United States
—
442
SLP
Simulations Plus, Inc.
+20.75%
$374.16M
$18.50
United States
Healthcare
443
NNNN
Anbio Biotechnology
+20.74%
$167.23M
$3.81
Germany
Healthcare
444
ILPT
Industrial Logistics Properties Trust
+20.73%
$470.56M
$7.05
United States
Real Estate
445
RVTY
Revvity, Inc.
+20.70%
$17.72B
$158.77
United States
Healthcare
446
BYFC
Broadway Financial Corp/Del
+20.69%
$104.48M
$11.26
United States
Financial Services
447
XIFR
XPLR Infrastructure, LP
+20.58%
$893.02M
$9.47
United States
Utilities
448
ERAS
Erasca, Inc.
+20.56%
$5.03B
$14.39
United States
Healthcare
449
LINE
Lineage, Inc.
+20.42%
$8.87B
$35.36
United States
Real Estate
450
OSCR
Oscar Health, Inc.
+20.42%
$9.56B
$30.99
United States
Healthcare
451
ASTL
Algoma Steel Group Inc.
+20.34%
$500.84M
$4.74
Canada
Basic Materials
452
HSTM
HealthStream Inc
+20.28%
$1.08B
$35.16
United States
Healthcare
453
LSCC
Lattice Semiconductor Corp
+20.28%
$13.66B
$96.19
United States
Technology
454
NBIX
Neurocrine Biosciences Inc
+20.22%
$14.51B
$142.70
United States
Healthcare
455
BEEP
Mobile Infrastructure Corporation
+20.11%
$105.31M
$2.55
United States
Industrials
456
CVLT
Commault Systems, Inc.
+20.10%
$7.02B
$169.37
United States
Technology
457
KYIV
Kyivstar Group Ltd.
+20.10%
$3.07B
$13.29
United Arab Emirates
Communication Services
458
CHKP
Check Point Software Technologies Ltd
+20.08%
$16.24B
$159.03
Israel
Technology
459
DRS
Leonardo DRS, Inc.
+20.01%
$9.21B
$34.51
United States
Industrials
460
EXTR
Extreme Networks
+20.01%
$2.90B
$21.97
United States
Technology
461
SMTI
Sanara MedTech Inc.
+20.01%
$301.37M
$32.80
United States
Healthcare
462
LAES
SEALSQ Corp
+20.00%
$348.64M
$1.55
Switzerland
Technology
463
CYTK
Cytokinetics Inc.
+19.99%
$8.51B
$61.23
United States
Healthcare
464
NWPX
NWPX Infrastructure, Inc.
+19.95%
$937.89M
$97.32
United States
Basic Materials
465
BUUU
BUUU Group Limited
+19.94%
$1.02B
$53.90
Hong Kong
Industrials
466
KN
KNOWLES CORPORATION
+19.94%
$2.75B
$32.17
United States
Technology
467
MARA
MARA Holdings, Inc.
+19.93%
$2.71B
$7.02
United States
Financial Services
468
DLTR
Dollar Tree Inc.
+19.91%
$23.51B
$125.31
United States
Consumer Defensive
469
FLYX
flyExclusive, Inc.
+19.91%
$109.48M
$1.14
United States
Industrials
470
HZO
MarineMax, Inc.
+19.83%
$1.16B
$52.59
United States
Consumer Cyclical
471
EVEX
Eve Holding, Inc.
+19.79%
$571.52M
$1.64
United States
Industrials
472
MTRN
Materion Corporation
+19.71%
$4.61B
$221.06
United States
Basic Materials
473
ON
ON Semiconductor Corp
+19.65%
$28.13B
$72.25
United States
Technology
474
ENVX
Enovix Corporation
+19.64%
$612.26M
$2.79
United States
Industrials
475
RDDT
Reddit
+19.54%
$27.75B
$144.25
United States
Communication Services
476
WLDN
Willdan Group, Inc.
+19.53%
$1.10B
$72.48
United States
Industrials
477
CMP
Compass Minerals International, Inc.
+19.51%
$892.93M
$21.27
United States
Basic Materials
478
MOVE
Corvex, Inc.
+19.50%
$266.93M
$8.46
United States
Technology
479
MOG.A
Moog Inc.
+19.47%
$10.81B
$341.34
United States
Industrials
480
WDAY
Workday, Inc.
+19.44%
$50.61B
$209.99
United States
Technology
481
ORA
Ormat Technologies, Inc.
+19.43%
$5.36B
$87.09
United States
Utilities
482
PUBM
PubMatic, Inc.
+19.43%
$785.28M
$17.24
United States
Technology
483
FLGT
Fulgent Genetics, Inc.
+19.42%
$553.06M
$20.10
United States
Healthcare
484
TH
Target Hospitality Corp.
+19.39%
$1.35B
$13.79
United States
Industrials
485
ACHV
Achieve Life Sciences, Inc.
+19.36%
$669.14M
$6.49
United States
Healthcare
486
ADUR
Aduro Clean Technologies Inc.
+19.33%
$346.28M
$9.77
Canada
Industrials
487
SANM
Sanmina Corp
+19.24%
$8.35B
$155.71
United States
Technology
488
RAPP
Rapport Therapeutics, Inc.
+19.23%
$1.24B
$25.93
United States
Healthcare
489
DGII
Digi International Inc
+19.20%
$2.84B
$74.95
United States
Technology
490
MNTK
Montauk Renewables, Inc.
+19.18%
$303.19M
$2.13
United States
Basic Materials
491
KLIC
Kulicke & Soffa Industries Inc
+19.17%
$3.86B
$73.71
Singapore
Technology
492
TVGN
Tevogen Inc.
+19.13%
$102.76M
$6.53
United States
Healthcare
493
KELYA
Kelly Services Inc
+19.06%
$583.15M
$16.79
United States
Industrials
494
AVTX
Avalo Therapeutics, Inc.
+19.03%
$371.66M
$6.93
United States
Healthcare
495
FRSH
Freshworks Inc.
+19.00%
$4.04B
$15.49
United States
Technology
496
MBLY
Mobileye Global Inc.
+18.99%
$5.56B
$6.54
Israel
Consumer Cyclical
497
TOP
TOP Financial Group Limited
+18.90%
$1.89B
$15.29
United States
Financial Services
498
CLW
Clearwater Paper Corporation
+18.89%
$311.10M
$19.29
United States
Basic Materials
499
SGHT
Sight Sciences, Inc.
+18.83%
$495.24M
$8.99
United States
Healthcare
500
SSYS
Stratasys Inc (ISRAEL)
+18.83%
$595.59M
$6.80
United States
Technology
Top gain on this page +22.25% WDC
Rows on this page 100 ranks 401–500
Page 5 of 44
Period May 2026 closed

The same month on news: the biggest gains on news in May 2026 and the biggest drops, each ranked by the move on the day its story landed.

For moves inside a single day, Today's stock movers ranks the biggest gainers and losers on our alert board in the latest trading session.

Looking for a specific symbol?
MARKET LEADERS
52-WEEK LEADER
MGRT +2,350%
Mega Fortune Company L..
2026 YTD LEADER
MGRT +1,466%
Mega Fortune Company L..
MAY 2026 LEADER
HYLN +266%
Hyliion Holdings Corp.
52-Week Top 5 Full List →
1 MGRT +2,350.0% 2 AXTI +759.4% 3 MRNA +648.3% 4 MTC +599.5% 5 BUUU +565.4%
2026 YTD Top 5 Full List →
1 MGRT +1,465.9% 2 BUUU +739.6% 3 ANL +645.1% 4 MRNA +578.5% 5 SNDK +421.5%
May 2026 Top 5 Full List →
1 HYLN +266.0% 2 RXT +254.1% 3 REPL +238.1% 4 AGL +230.2% 5 OTLK +192.0%
Quick Access: 52-Week 2026 YTD May 2026 Market Cap Dividends

This ranking shows the top performing stocks and biggest stock gainers of May 2026, measured from the last close of April to the last close of May.

Monthly performance rankings can reveal price strength, sustained momentum, sector rotation, and event-driven moves that are not visible in one-day movers lists. The table is informational only and does not recommend any stock to buy, sell, or hold.

Gains are computed on split-adjusted closes, so a split inside the month does not read as a move. This ranking is informational and is not investment advice.