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
,
19
of 19 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.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/11/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
over 1,000x 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
4
SABSMore than one ranked move this month2+ ranked moves
+99.71%
against the close of 04/12/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/19/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Contract / Partnershipcatalyst from a later release the same session
against the close of 04/11/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/04/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 0.3% bigger, at +85.91%.
Month end +87.29% on 2023-04-28
Close before and after
$3.62 to $6.72 as traded
Session open, high, low
$6.45, $7.06, $6.11
Opening gap
+78.18%
Close inside the session range
0.64 of the range, where 1.00 is the high
Session volume
8,380,951 shares, $56,319,991
Relative volume
over 1,000x 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
9
IFRXAlso on the opposite board this monthon both boards
+83.90%
against the close of 04/03/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/10/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/03/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/18/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 5.3% bigger, at +51.06%.
Month end +35.46% on 2023-04-28
Close before and after
$7.05 to $10.47 as traded
Session open, high, low
$7.26, $10.80, $7.26
Opening gap
+2.98%
Close inside the session range
0.91 of the range, where 1.00 is the high
Session volume
1,059,087 shares, $11,088,747
Relative volume
25.4x 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
17
GSMGAlso on the opposite board this monthon both boards
+47.92%
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
15.1x 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
19
SABSMore than one ranked move this month2+ ranked moves
+41.56%
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 03/31/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/21/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/12/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
29.6x 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
23
BBBYAlso on the opposite board this monthon both boards
+35.28%
against the close of 04/18/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/24/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/26/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/10/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/11/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/21/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/12/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/12/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
10.4x 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
32
HILSAlso on the opposite board this monthon both boards
+29.32%
against the close of 04/11/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 03/31/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
It gave back the whole move and closed 15.03% below the pre-news price.
Month end +5.05% on 2023-04-28
Close before and after
$3.86 to $4.95 as traded
Session open, high, low
$3.94, $5.10, $3.53
Opening gap
+2.07%
Close inside the session range
0.90 of the range, where 1.00 is the high
Session volume
775,281 shares, $3,837,641
Relative volume
13.0x 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
34
KRUSAlso on the opposite board this monthon both boards
+27.95%
against the close of 04/10/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
11.8x 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
35
LVOMore than one ranked move this month2+ ranked moves
+27.82%
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/05/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/25/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 03/31/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/13/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/26/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/18/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session 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
$17.18 to $21.31 split-adjusted
Session open, high, low
$17.95, $21.33, $17.62
Opening gap
+4.48%
Close inside the session range
0.99 of the range, where 1.00 is the high
Session volume
1,396,876 shares, $29,767,428
Relative volume
7.0x 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
46
NNVCMore than one ranked move this month2+ ranked moves
+23.85%
against the close of 04/03/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/24/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/18/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/25/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 35.1% bigger, at +29.47%.
Month end +21.81% on 2023-04-28same session
This month ended before the fifth session after the move.
Close before and after
$9.40 to $11.45 split-adjusted
Session open, high, low
$10.10, $11.84, $10.10
Opening gap
+7.45%
Close inside the session range
0.78 of the range, where 1.00 is the high
Session volume
88,372 shares, $1,011,859
Relative volume
18.7x 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
56
NNVCMore than one ranked move this month2+ ranked moves
+21.64%
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
21.9x 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
57
IMBILAlso on the opposite board this monthon both boards
+21.48%
against the close of 04/06/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/03/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/21/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/26/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/26/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/19/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/06/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/13/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 03/31/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
22.4x 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
67
ZFOXAlso on the opposite board this monthon both boards
+20.61%
against the close of 04/10/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/12/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/11/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/05/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/20/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/26/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 03/31/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/06/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/12/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/14/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/10/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/20/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
30.2x 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
80
LVOMore than one ranked move this month2+ ranked moves
+18.64%
against the close of 04/06/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/25/2023session 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
$2.42 to $2.87 split-adjusted
Session open, high, low
$2.56, $3.04, $2.50
Opening gap
+5.79%
Close inside the session range
0.69 of the range, where 1.00 is the high
Session volume
10,268,027 shares, $29,469,237
Relative volume
0.8x 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
82
ANVSAlso on the opposite board this monthon both boards
+18.29%
against the close of 04/10/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/17/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/26/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/19/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 03/31/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/18/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/06/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/03/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/11/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/25/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/24/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/27/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/26/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 72.3% bigger, at +30.00%.
Month end +23.70% on 2023-04-28
This month ended before the fifth session after the move.
Close before and after
$2.70 to $3.17 split-adjusted
Session open, high, low
$2.86, $3.20, $2.86
Opening gap
+5.93%
Close inside the session range
0.91 of the range, where 1.00 is the high
Session volume
1,000,179 shares, $3,170,567
Relative volume
2.9x 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
96
AGFYAlso on the opposite board this monthon both boards
+17.29%
against the close of 04/24/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/10/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/20/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/19/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 04/13/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 125.0% bigger, at +36.99%.
Month end +58.22% on 2023-04-28
Close before and after
$3.02 to $3.51 as traded
Session open, high, low
$3.15, $3.57, $3.15
Opening gap
+4.45%
Close inside the session range
0.85 of the range, where 1.00 is the high
Session volume
21,439 shares, $75,283
Relative volume
1.3x 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
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.727 smaller events this month are held out of this month's eligible pool; switch to include them.270 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.
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 April 2023, the median gainer had given back 9.1% of its move five sessions later; the largest catalyst group was Earnings, 31 of the 100 events, at a median of +21.2%.
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
97.0% of 100
4.2%given back, of 100
Day +5
87.0% of 100
9.1%given back, of 100
Month end
84.4% of 90
7.4%given back, of 90
Month end falls before day +5 for 18 of these 90 events, so this row is not a later horizon than the one above it. 90 of the 100 events have a month-end close later than the measured session; 10 have it on the measured session itself.
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 April 2023
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-market50.0%
Intraday10.0%
After hours40.0%
Volume against normal
Under 5x35 events, 35.4%
5x to 20x29 events, 29.3%
Over 20x35 events, 35.4%
1 event has too little trading history for a relative volume, and is not in the tiers above.
Industry
Pharmaceutical Preparations15 events, 15.0%
Biological Products, (no Diagnostic Substances)6 events, 6.0%
Services-prepackaged Software5 events, 5.0%
Retail-eating Places3 events, 3.0%
Services-business Services, Nec3 events, 3.0%
Surgical & Medical Instruments & Apparatus3 events, 3.0%
29 other industries, 35 events
Industry not known: 30.0%
Against March 2023
100 events in the comparable window.
March 2023 median +32.7%, selected from the 9,373 events in that month's eligible pool
April 2023 median +23.0%, 9.7 points below March 2023. April 2023's median is taken over the 100 ranked rows, selected from the 9,279 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.
