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
,
21
of 21 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 12/29/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/25/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
838.9x 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
4
SGMTAlso on the opposite board this monthon both boards
+170.09%
against the close of 01/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/26/2024session 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
$5.11 to $13.70 split-adjusted
Session open, high, low
$12.30, $16.50, $9.82
Opening gap
+140.80%
Close inside the session range
0.58 of the range, where 1.00 is the high
Session volume
7,767,975 shares, $106,421,258
Relative volume
954.3x 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
6
EVAXMore than one ranked move this month2+ ranked moves
+113.43%
against the close of 01/23/2024session 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 21.24% below the pre-news price.
Month end -21.24% on 2024-01-31
Close before and after
$24.95 to $53.25 split-adjusted
Session open, high, low
$46.65, $68.05, $41.75
Opening gap
+86.97%
Close inside the session range
0.44 of the range, where 1.00 is the high
Session volume
6,586,763 shares, $350,745,130
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
7
FAZEAlso on the opposite board this monthon both boards
+107.12%
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
24.9x 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
11
PALIAlso on the opposite board this monthon both boards
+84.62%
against the close of 01/26/2024session 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 1.92% below the pre-news price.
Month end +15.29% on 2024-01-31
This month ended before the fifth session after the move.
Close before and after
$7.80 to $14.40 split-adjusted
Session open, high, low
$17.55, $22.35, $13.95
Opening gap
+125.00%
Close inside the session range
0.05 of the range, where 1.00 is the high
Session volume
9,068,019 shares, $130,579,474
Relative volume
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
12
SIDUAlso on the opposite board this monthon both boards
+67.00%
against the close of 01/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 58.6% bigger, at +84.81%.
Month end +101.81% on 2024-01-31
Close before and after
$1.88 to $2.89 split-adjusted
Session open, high, low
$2.77, $3.34, $2.54
Opening gap
+46.95%
Close inside the session range
0.44 of the range, where 1.00 is the high
Session volume
9,467,130 shares, $27,360,006
Relative volume
139.5x 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
15
MESAAlso on the opposite board this monthon both boards
+49.98%
against the close of 01/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/24/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Reverse Merger / ShellRelease reads negative, stock rose 48.66%
against the close of 01/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/23/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Offering / DilutionRose on dilutionRelease reads negative, stock rose 46.13%
against the close of 01/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/24/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
4.3x 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
24
AEVAAlso on the opposite board this monthon both boards
+38.36%
against the close of 01/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/29/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
303.5x 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
27
EVAXMore than one ranked move this month2+ ranked moves
+36.29%
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 60.2% bigger, at +58.14%.
Month end +7.34% on 2024-01-31
Close before and after
$18.31 to $24.95 split-adjusted
Session open, high, low
$27.75, $27.85, $20.75
Opening gap
+51.59%
Close inside the session range
0.59 of the range, where 1.00 is the high
Session volume
251,742 shares, $6,280,963
Relative volume
278.3x 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
28
RUMMore than one ranked move this month2+ ranked moves
+36.21%
against the close of 01/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 45.4% bigger, at +52.24%.
Month end +70.05% on 2024-01-31
Close before and after
$31.14 to $42.34 split-adjusted
Session open, high, low
$34.76, $42.87, $33.89
Opening gap
+11.60%
Close inside the session range
0.94 of the range, where 1.00 is the high
Session volume
231,125,170 shares, $9,784,915,197
Relative volume
8.2x 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
30
AMSCAlso on the opposite board this monthon both boards
+35.90%
against the close of 01/24/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 103.9% bigger, at +70.49%.
Month end +84.00% on 2024-01-31
Close before and after
$9.69 to $13.04 split-adjusted
Session open, high, low
$12.31, $13.75, $11.91
Opening gap
+27.04%
Close inside the session range
0.61 of the range, where 1.00 is the high
Session volume
8,022,421 shares, $104,612,370
Relative volume
12.7x 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
32
SYTAlso on the opposite board this monthon both boards
+33.82%
against the close of 01/11/2024session 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
1 calendar day from the pre-news close to the measured session
33
RUMMore than one ranked move this month2+ ranked moves
+32.92%
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/11/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/08/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
7.1x 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
44
GNSMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+28.77%
against the close of 01/23/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/25/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/29/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 46.9% bigger, at +40.17%.
Month end +38.46% on 2024-01-31
Close before and after
$1.17 to $1.49 split-adjusted
Session open, high, low
$1.25, $1.57, $1.24
Opening gap
+6.84%
Close inside the session range
0.77 of the range, where 1.00 is the high
Session volume
17,282,243 shares, $25,750,542
Relative volume
5.2x 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
49
MAIAMore than one ranked move this month2+ ranked moves
+26.89%
against the close of 01/04/2024session 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 7.56% below the pre-news price.
Month end +26.05% on 2024-01-31
Close before and after
$1.19 to $1.51 split-adjusted
Session open, high, low
$1.23, $1.55, $1.22
Opening gap
+3.36%
Close inside the session range
0.88 of the range, where 1.00 is the high
Session volume
1,160,263 shares, $1,751,997
Relative volume
5.8x 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
50
GNSMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+26.68%
against the close of 01/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
3.1x 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
56
ACRSAlso on the opposite board this monthon both boards
+25.54%
against the close of 01/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/26/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/08/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/29/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 243.7% bigger, at +75.86%.
Month end +70.34% on 2024-01-31
Close before and after
$5.80 to $7.08 split-adjusted
Session open, high, low
$5.98, $7.39, $5.90
Opening gap
+3.10%
Close inside the session range
0.79 of the range, where 1.00 is the high
Session volume
174,129 shares, $1,232,833
Relative volume
4.0x 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
65
LAESMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+21.87%
against the close of 01/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Guidance Changecatalyst from a later release the same session
against the close of 01/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
6.7x 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
68
LAESMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+21.37%
against the close of 01/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 212.0% bigger, at +66.67%.
Month end +67.52% on 2024-01-31
Close before and after
$1.17 to $1.42 split-adjusted
Session open, high, low
$1.26, $1.55, $1.24
Opening gap
+7.69%
Close inside the session range
0.58 of the range, where 1.00 is the high
Session volume
12,403,582 shares, $17,613,086
Relative volume
89.7x 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
69
LAESMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
+21.29%
against the close of 01/23/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
3.7x 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
71
MAIAMore than one ranked move this month2+ ranked moves
+20.33%
against the close of 01/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/26/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/29/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 178.5% bigger, at +55.32%.
Month end +26.24% on 2024-01-31
Close before and after
$1.41 to $1.69 as traded
Session open, high, low
$1.42, $1.69, $1.40
Opening gap
+0.71%
Close inside the session range
1.00 of the range, where 1.00 is the high
Session volume
3,089,312 shares, $5,220,937
Relative volume
3.3x 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
78
VYGRAlso on the opposite board this monthon both boards
+19.67%
against the close of 01/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
9.9x 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
80
MOBAlso on the opposite board this monthon both boards
+19.63%
against the close of 01/23/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/26/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/29/2023session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
2.0x 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
86
HRTXMore than one ranked move this month2+ ranked moves
+18.86%
against the close of 01/23/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/26/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Buyback / Dividendcatalyst from a later release the same session
against the close of 01/26/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/22/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the move was 18.5% bigger, at +21.63%.
Month end +22.02% on 2024-01-31
Close before and after
$18.03 to $21.32 as traded
Session open, high, low
$21.39, $21.52, $20.06
Opening gap
+18.64%
Close inside the session range
0.86 of the range, where 1.00 is the high
Session volume
8,135,319 shares, $173,445,001
Relative volume
25.5x 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
96
HRTXMore than one ranked move this month2+ ranked moves
+18.08%
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/08/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 01/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
4.5x 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
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.693 smaller events this month are held out of this month's eligible pool; switch to include them.230 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 vendor names the ticker as a preferred, a note, a depositary share or a fund rather than a company's common stock.
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.
2 events were left out of this board because the measured session changed hands for less than $25,000 in total, so the percentage prices a handful of shares rather than a move anyone could have taken.
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.
Whole board, unfiltered
In January 2024, the median gainer had given back 10.5% of its move five sessions later; the largest catalyst group was Other Announcement, 37 of the 100 events, at a median of +26.7%.
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.
Median change since the measured close as a share of the move
Day +1
100.0% of 100
0.8%given back, of 100
Day +5
90.0% of 100
10.5%given back, of 100
Month end
88.7% of 97
1.6%given back, of 97
Month end falls before day +5 for 14 of these 97 events, so this row is not a later horizon than the one above it. 97 of the 100 events have a month-end close later than the measured session; 3 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 January 2024
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-market70.0%
Intraday6.0%
After hours24.0%
Volume against normal
Under 5x26 events, 26.0%
5x to 20x36 events, 36.0%
Over 20x38 events, 38.0%
Industry
Pharmaceutical Preparations27 events, 27.0%
Biological Products, (no Diagnostic Substances)7 events, 7.0%
Air Transportation, Scheduled2 events, 2.0%
Guided Missiles & Space Vehicles & Parts2 events, 2.0%
Motor Vehicle Parts & Accessories2 events, 2.0%
Retail-retail Stores, Nec2 events, 2.0%
33 other industries, 35 events
Industry not known: 23.0%
2 events on this board carry the flag for a move that ran against its own release, too few to say whether the flag predicts anything.
Against December 2023
100 events in the comparable window.
December 2023 median +32.7%, selected from the 3,881 events in that month's eligible pool
January 2024 median +26.7%, 6.0 points below December 2023. January 2024's median is taken over the 100 ranked rows, selected from the 5,543 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.
