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
,
20
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 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/20/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/06/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/11/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 3.0% bigger, at -75.35%.
Month end -76.94% on 2024-12-31
Close before and after
$68.65 to $18.43 split-adjusted
Session open, high, low
$18.71, $19.34, $15.67
Opening gap
-72.75%
Close inside the session range
0.75 of the range, where 1.00 is the high
Session volume
14,645,678 shares, $269,919,846
Relative volume
31.8x 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
7
LITMMore than one ranked move this month2+ ranked moves
-63.14%
against the close of 12/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/20/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
FDA & RegulatoryRelease reads positive, stock fell 42.90%
Five sessions later the drop was 6.0% bigger, at -45.48%.
Month end -42.90% on 2024-12-31same session
This month ended before the fifth session after the move.
Close before and after
$15.50 to $8.85 split-adjusted
Session open, high, low
$14.25, $14.65, $8.75
Opening gap
-8.06%
Close inside the session range
0.02 of the range, where 1.00 is the high
Session volume
141,798 shares, $1,254,912
Relative volume
10.5x 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
LITMMore than one ranked move this month2+ ranked moves
-41.56%
against the close of 12/27/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/13/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/11/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 1.2% bigger, at -38.40%.
Month end -46.63% on 2024-12-31
Close before and after
$176.82 to $109.76 split-adjusted
Session open, high, low
$116.76, $117.60, $89.88
Opening gap
-33.97%
Close inside the session range
0.72 of the range, where 1.00 is the high
Session volume
30,717 shares, $3,371,498
Relative volume
31.2x 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
20
TNXPMore than one ranked move this month2+ ranked moves
-37.00%
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
21.9% of the drop was recovered five sessions later.
Month end -27.60% on 2024-12-31
Close before and after
$7.39 to $4.70 split-adjusted
Session open, high, low
$5.00, $5.20, $3.77
Opening gap
-32.34%
Close inside the session range
0.65 of the range, where 1.00 is the high
Session volume
14,074,650 shares, $66,150,855
Relative volume
20.9x 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
22
ADCTAlso on the opposite board this monthrelease reads positiveon both boards
-36.21%
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 24.6% bigger, at -45.11%.
Month end -42.82% on 2024-12-31
Close before and after
$3.48 to $2.22 split-adjusted
Session open, high, low
$3.37, $3.47, $2.06
Opening gap
-3.16%
Close inside the session range
0.11 of the range, where 1.00 is the high
Session volume
5,627,287 shares, $12,492,577
Relative volume
11.6x 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
TNXPMore than one ranked move this month2+ ranked moves
-34.09%
against the close of 12/20/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 36.1% bigger, at -44.00%.
Month-end is not shown: no closing price is available for 2024-12-31.
Close before and after
$0.6252 to $0.4230 as traded
Session open, high, low
$0.4800, $0.4810, $0.4000
Opening gap
-23.22%
Close inside the session range
0.28 of the range, where 1.00 is the high
Session volume
6,383,193 shares, $2,700,091
Relative volume
16.9x 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
27
SRMAlso on the opposite board this monthrelease reads positiveon both boards
-32.33%
against the close of 12/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/27/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/20/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Other AnnouncementRelease reads positive, stock fell 31.71%
against the close of 12/11/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
13.8% of the drop was recovered five sessions later.
Month end -30.38% on 2024-12-31
Close before and after
$20.11 to $13.81 split-adjusted
Session open, high, low
$17.29, $17.78, $12.17
Opening gap
-14.02%
Close inside the session range
0.29 of the range, where 1.00 is the high
Session volume
5,713,477 shares, $78,903,117
Relative volume
14.1x 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
33
CADLAlso on the opposite board this monthon both boards
-31.12%
against the close of 12/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
8.7% of the drop was recovered five sessions later.
Month end -29.28% on 2024-12-31
Close before and after
$1.01 to $0.7000 as traded
Session open, high, low
$0.9300, $0.9300, $0.6823
Opening gap
-7.92%
Close inside the session range
0.07 of the range, where 1.00 is the high
Session volume
1,735,162 shares, $1,214,613
Relative volume
16.5x 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
35
RDZNMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
-30.61%
against the close of 12/11/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
46.7% of the drop was recovered five sessions later.
Month end -11.02% on 2024-12-31
Close before and after
$2.45 to $1.70 split-adjusted
Session open, high, low
$2.36, $2.38, $1.70
Opening gap
-3.67%
Close inside the session range
0.00 of the range, where 1.00 is the high
Session volume
740,880 shares, $1,259,496
Relative volume
5.9x 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
36
RDZNMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
-29.78%
against the close of 12/13/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/20/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 29.3% bigger, at -38.09%.
Month end -38.09% on 2024-12-31
Close before and after
$6.38 to $4.50 split-adjusted
Session open, high, low
$5.07, $5.11, $3.51
Opening gap
-20.53%
Close inside the session range
0.62 of the range, where 1.00 is the high
Session volume
473,368 shares, $2,130,156
Relative volume
7.8x 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
38
PLRZAlso on the opposite board this monthrelease reads positiveon both boards
-29.18%
against the close of 12/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/20/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
32.1% of the drop was recovered five sessions later.
Month end -15.14% on 2024-12-31
Close before and after
$12.42 to $9.40 split-adjusted
Session open, high, low
$10.50, $10.84, $9.40
Opening gap
-15.46%
Close inside the session range
0.00 of the range, where 1.00 is the high
Session volume
1,532,351 shares, $14,404,099
Relative volume
77.4x 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
45
AMPGAlso on the opposite board this monthon both boards
-24.18%
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/26/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
24.0% of the drop was recovered five sessions later.
Month end -23.30% on 2024-12-31
Close before and after
$5.28 to $4.03 split-adjusted
Session open, high, low
$4.11, $4.50, $3.99
Opening gap
-22.12%
Close inside the session range
0.08 of the range, where 1.00 is the high
Session volume
32,022,142 shares, $129,049,232
Relative volume
11.3x 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
53
OPTXAlso on the opposite board this monthon both boards
-23.62%
against the close of 12/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/06/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 52.9% bigger, at -33.39%.
Month end -33.70% on 2024-12-31
Close before and after
$12.82 to $10.02 split-adjusted
Session open, high, low
$12.69, $12.69, $9.53
Opening gap
-1.01%
Close inside the session range
0.16 of the range, where 1.00 is the high
Session volume
591,970 shares, $5,931,539
Relative volume
11.7x 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
58
UAVSMore than one ranked move this month2+ ranked moves
-21.84%
against the close of 12/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/13/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 64.9% bigger, at -35.82%.
Month end -37.28% on 2024-12-31
Close before and after
$6.17 to $4.83 split-adjusted
Session open, high, low
$3.95, $5.17, $3.01
Opening gap
-35.98%
Close inside the session range
0.84 of the range, where 1.00 is the high
Session volume
6,096,841 shares, $29,447,742
Relative volume
9.2x 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
60
LAESAlso on the opposite board this monthon both boards
-21.48%
against the close of 12/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/06/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/06/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/24/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/10/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/04/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/11/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/19/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/23/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/06/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
23.4% of the drop was recovered five sessions later.
Month end -18.33% on 2024-12-31
Close before and after
$10.96 to $8.91 split-adjusted
Session open, high, low
$9.78, $9.78, $8.50
Opening gap
-10.77%
Close inside the session range
0.32 of the range, where 1.00 is the high
Session volume
226,097 shares, $2,014,524
Relative volume
1.8x 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
WKEYMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
-18.52%
against the close of 12/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 36.4% bigger, at -24.64%.
Month end -27.31% on 2024-12-31
Close before and after
$9.74 to $7.98 split-adjusted
Session open, high, low
$9.19, $9.84, $7.70
Opening gap
-5.65%
Close inside the session range
0.13 of the range, where 1.00 is the high
Session volume
1,247,549 shares, $9,955,441
Relative volume
5.5x 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
84
KULRAlso on the opposite board this monthon both boards
-17.99%
against the close of 12/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/06/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/17/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 53.2% bigger, at -26.97%.
Month end -41.20% on 2024-12-31
Close before and after
$133.50 to $110.00 split-adjusted
Session open, high, low
$120.50, $125.00, $110.00
Opening gap
-9.74%
Close inside the session range
0.00 of the range, where 1.00 is the high
Session volume
2,166 shares, $238,260
Relative volume
15.5x 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
88
UAVSMore than one ranked move this month2+ ranked moves
-17.16%
against the close of 12/16/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/03/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/12/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
26.6% of the drop was recovered five sessions later.
Month end -1.69% on 2024-12-31
Close before and after
$2.95 to $2.46 split-adjusted
Session open, high, low
$2.84, $2.84, $2.46
Opening gap
-3.73%
Close inside the session range
0.00 of the range, where 1.00 is the high
Session volume
193,453 shares, $475,894
Relative volume
2.0x 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
93
WKEYMore than one ranked move this monthAlso on the opposite board this month2+ ranked moveson both boards
-16.54%
against the close of 12/30/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/11/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/05/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/09/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/18/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/20/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 12/02/2024session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 17.9% bigger, at -18.97%.
Month end -26.77% on 2024-12-31
Close before and after
$85.14 to $71.44 split-adjusted
Session open, high, low
$77.08, $78.71, $71.25
Opening gap
-9.47%
Close inside the session range
0.03 of the range, where 1.00 is the high
Session volume
4,653,825 shares, $332,469,258
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
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.685 smaller events this month are held out of this month's eligible pool; switch to include them.165 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
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.
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 December 2024, the median decliner was 6.0% deeper below its pre-news close five sessions later; the largest catalyst group was Other Announcement, 23 of the 100 events, at a median of -23.6%.
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.
Fewer than 10 events in this group, so no figures are shown.
The day +5 figures are measured over the events in each group that have a five-session close, the count printed beside them, not over every event in the group.
Median change since the measured close as a share of the drop
Day +1
96.0% of 100
2.7%deeper below baseline, of 100
Day +5
90.9% of 99
6.0%deeper below baseline, of 99
Month end
90.3% of 93
13.6%deeper below baseline, of 93
Month end falls before day +5 for 5 of these 93 events, so this row is not a later horizon than the one above it. 93 of the 100 events have a month-end close later than the measured session; 5 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 December 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-market53.0%
Intraday3.0%
After hours44.0%
Volume against normal
Under 5x23 events, 23.0%
5x to 20x53 events, 53.0%
Over 20x24 events, 24.0%
Industry
Pharmaceutical Preparations28 events, 28.0%
Biological Products, (no Diagnostic Substances)8 events, 8.0%
Services-prepackaged Software5 events, 5.0%
Aircraft2 events, 2.0%
Insurance Agents, Brokers & Service2 events, 2.0%
Real Estate2 events, 2.0%
33 other industries, 35 events
Industry not known: 18.0%
6 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 November 2024
100 events in the comparable window.
November 2024 median -29.0%, selected from the 7,112 events in that month's eligible pool
December 2024 median -23.8%, 5.2 points shallower than November 2024. December 2024's median is taken over the 100 ranked rows, selected from the 4,246 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.
