Ranked by the close-to-close change of the trading session each announcement landed in. How this is measured.
Data as of the trading session of
,
22
of 22 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.
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.
CEREAlso on the opposite board this monthon both boards
+136.20%
against the close of 06/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
This month ended before the fifth session after the move.
Close before and after
$12.57 to $29.69 as traded
Session open, high, low
$20.16, $31.09, $19.05
Opening gap
+60.38%
Close inside the session range
0.88 of the range, where 1.00 is the high
Session volume
85,962,447 shares, $2,552,225,051
Relative volume
316.6x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
2
RAPTAlso on the opposite board this monthon both boards
+115.51%
against the close of 06/11/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
169.0x the median of the 20 sessions before the pre-news close
Baseline gap
4 calendar days from the pre-news close to the measured session
4
ALFAlso on the opposite board this monthon both boards
+104.40%
against the close of 06/14/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 261.8% bigger, at +377.71%.
Month end +331.67% on 2021-06-30
Close before and after
$3.41 to $6.97 split-adjusted
Session open, high, low
$5.14, $7.00, $4.66
Opening gap
+50.73%
Close inside the session range
0.99 of the range, where 1.00 is the high
Session volume
198,807,106 shares, $1,385,685,529
Relative volume
321.3x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
5
AMCMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+95.22%
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/18/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
30.6x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
10
TRCHMore than one ranked move this month2+ ranked moves
+58.21%
against the close of 06/18/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Month-end is not shown: no closing price is available for 2021-06-30.
Close before and after
$12.54 to $19.84 as traded
Session open, high, low
$17.80, $21.76, $16.14
Opening gap
+41.95%
Close inside the session range
0.66 of the range, where 1.00 is the high
Session volume
201,307,749 shares, $3,993,945,740
Relative volume
55.2x the median of the 20 sessions before the pre-news close
Baseline gap
3 calendar days from the pre-news close to the measured session
11
ENOBAlso on the opposite board this monthon both boards
+53.97%
against the close of 06/11/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/25/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/18/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/21/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
M&A / Acquisitioncatalyst from a later release the same session
against the close of 06/17/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
49.9x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
16
ENTXMore than one ranked move this month2+ ranked moves
+44.77%
against the close of 06/22/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 127.9% bigger, at +95.61%.
Month end +87.32% on 2021-06-30
Close before and after
$41.00 to $58.20 split-adjusted
Session open, high, low
$53.80, $64.00, $50.40
Opening gap
+31.22%
Close inside the session range
0.57 of the range, where 1.00 is the high
Session volume
11,065,168 shares, $643,992,778
Relative volume
19.0x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
18
TRCHMore than one ranked move this month2+ ranked moves
+41.62%
against the close of 06/14/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/08/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/24/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/04/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
FDA & Regulatorycatalyst from a later release the same session
against the close of 06/14/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/11/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
11.9x the median of the 20 sessions before the pre-news close
Baseline gap
3 calendar days from the pre-news close to the measured session
24
AVXLMore than one ranked move this month2+ ranked moves
+35.42%
against the close of 06/11/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/24/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/17/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/17/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/09/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/02/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/25/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/04/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/08/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/21/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/02/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
5.3x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
41
ENTXMore than one ranked move this month2+ ranked moves
+24.76%
against the close of 06/16/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/18/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/29/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/21/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/04/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/25/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
5.5x the median of the 20 sessions before the pre-news close
Baseline gap
4 calendar days from the pre-news close to the measured session
49
AMCMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+22.66%
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/21/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/02/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/24/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/04/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/07/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/23/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 18.2% bigger, at +23.30%.
Month end +21.15% on 2021-06-30
This month ended before the fifth session after the move.
Close before and after
$2.79 to $3.34 split-adjusted
Session open, high, low
$3.26, $3.39, $3.02
Opening gap
+16.85%
Close inside the session range
0.86 of the range, where 1.00 is the high
Session volume
1,970,807 shares, $6,582,495
Relative volume
14.0x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
63
PRTKAlso on the opposite board this monthon both boards
+19.59%
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/01/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/25/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/02/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
6.3x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
69
PDSBMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+18.72%
against the close of 06/07/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/24/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/07/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
9.4x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
72
HCMMore than one ranked move this month2+ ranked moves
+18.18%
against the close of 06/29/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/14/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/04/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/21/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/11/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/04/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/04/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/17/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/10/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 48.8% bigger, at +25.50%.
Month end +32.62% on 2021-06-30
Close before and after
$33.84 to $39.64 split-adjusted
Session open, high, low
$33.73, $40.46, $33.58
Opening gap
-0.33%
Close inside the session range
0.88 of the range, where 1.00 is the high
Session volume
864,395 shares, $34,264,618
Relative volume
3.2x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
81
AVXLMore than one ranked move this month2+ ranked moves
+16.61%
against the close of 06/25/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
This month ended before the fifth session after the move.
Close before and after
$24.75 to $28.86 split-adjusted
Session open, high, low
$29.70, $31.50, $27.13
Opening gap
+20.00%
Close inside the session range
0.40 of the range, where 1.00 is the high
Session volume
13,683,859 shares, $394,916,171
Relative volume
6.3x the median of the 20 sessions before the pre-news close
Baseline gap
3 calendar days from the pre-news close to the measured session
82
ALTAlso on the opposite board this monthon both boards
+16.49%
against the close of 06/15/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/07/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/25/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/21/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/15/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/11/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
10.2x the median of the 20 sessions before the pre-news close
Baseline gap
3 calendar days from the pre-news close to the measured session
90
HCMMore than one ranked move this month2+ ranked moves
+15.95%
against the close of 06/22/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/11/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/03/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 83.4% bigger, at +29.14%.
Month end +26.27% on 2021-06-30
Close before and after
$29.27 to $33.92 split-adjusted
Session open, high, low
$30.60, $34.94, $30.20
Opening gap
+4.54%
Close inside the session range
0.78 of the range, where 1.00 is the high
Session volume
323,834 shares, $10,984,449
Relative volume
3.5x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
94
PDSBMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+15.78%
against the close of 06/17/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/15/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/09/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/25/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/24/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 05/28/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 06/23/2021session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 14.1% bigger, at +17.65%.
Month end +17.35% on 2021-06-30
This month ended before the fifth session after the move.
Close before and after
$23.40 to $27.02 split-adjusted
Session open, high, low
$27.65, $28.40, $26.16
Opening gap
+18.16%
Close inside the session range
0.38 of the range, where 1.00 is the high
Session volume
4,238,591 shares, $114,526,729
Relative volume
8.0x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
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.560 smaller events this month are held out of this month's eligible pool; switch to include them.160 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
2 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 stored move and the session's own closing prices disagree by far more than a measurement difference, so neither figure could be published.
8 events were 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.
Whole board, unfiltered
In June 2021, the median gainer had given back 11.0% of its move five sessions later; the largest catalyst group was Other Announcement, 26 of the 100 events, at a median of +22.1%.
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.
Median change since the measured close as a share of the move
Day +1
99.0% of 100
9.5%given back, of 100
Day +5
93.9% of 98
11.0%given back, of 98
Month end
88.5% of 96
13.6%given back, of 96
Month end falls before day +5 for 15 of these 96 events, so this row is not a later horizon than the one above it. 96 of the 100 events have a month-end close later than the measured session; 2 have it on the measured session itself, and 2 have no month-end close.
Both figures in a row are measured over the events that have a close at that horizon, the count printed beside each of them, not over all 100 events on this board, which is why the denominators differ between rows.
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 June 2021
Two or more ranked moves this month, each on a different trading day.
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-market59.0%
Intraday12.0%
After hours29.0%
Volume against normal
Under 5x16 events, 16.0%
5x to 20x44 events, 44.0%
Over 20x40 events, 40.0%
Industry
Pharmaceutical Preparations13 events, 13.0%
Biological Products, (no Diagnostic Substances)6 events, 6.0%
Services-prepackaged Software6 events, 6.0%
Biological Products, (no Disgnostic Substances)2 events, 2.0%
Finance Services2 events, 2.0%
Services-computer Processing & Data Preparation2 events, 2.0%
29 other industries, 30 events
Industry not known: 39.0%
Against May 2021
100 events in the comparable window.
May 2021 median +22.7%, selected from the 10,348 events in that month's eligible pool
June 2021 median +22.3%, 0.4 points below May 2021. June 2021's median is taken over the 100 ranked rows, selected from the 8,197 events in that month's eligible pool.
The two windows drew on pools of very different size, so part of the gap between the medians is how deep into each pool the top hundred reaches rather than how severe the moves were.
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.
