Ranked by the close-to-close change of the trading session each announcement landed in. How this is measured.
Data through the
session.
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 08/14/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/28/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/17/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/21/2020session 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 08/03/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/18/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
FDA & RegulatoryRelease reads positive, stock fell 35.28%
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/07/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/05/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/25/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/20/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/26/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/11/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/05/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 31.7% bigger, at -40.13%.
Month end -19.96% on
Close before and after
$112.64 to $78.32 split-adjusted
Session open, high, low
$104.08, $105.20, $78.00
Opening gap
-7.60%
Close inside the session range
0.01 of the range, where 1.00 is the high
Session volume
77,788 shares, $6,092,356
Relative volume
8.0x the median of the 20 sessions before the pre-news close
Baseline gap
1 calendar day from the pre-news close to the measured session
19
BFRAMore than one ranked move this month2+ ranked moves
-29.74%
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/03/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/06/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/27/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/11/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/26/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/20/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/05/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/19/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
31.3% of the drop was recovered five sessions later.
Month end -12.66% on
Close before and after
$10.35 to $7.86 split-adjusted
Session open, high, low
$9.50, $9.54, $7.83
Opening gap
-8.21%
Close inside the session range
0.02 of the range, where 1.00 is the high
Session volume
2,264,745 shares, $17,800,896
Relative volume
14.4x 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
30
AMTXMore than one ranked move this month2+ ranked moves
-23.84%
against the close of 08/20/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/04/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/12/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/20/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/17/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/21/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/05/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/07/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/24/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/18/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/03/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/07/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/04/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/24/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/14/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/25/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/11/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/12/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/05/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/03/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/03/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/17/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/07/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/12/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/06/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/21/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/06/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 12.9% bigger, at -19.43%.
Month end -21.31% on
Close before and after
$132.10 to $109.37 as traded
Session open, high, low
$120.70, $121.15, $107.00
Opening gap
-8.63%
Close inside the session range
0.17 of the range, where 1.00 is the high
Session volume
2,382,226 shares, $260,544,058
Relative volume
10.2x 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
68
MARAMore than one ranked move this month2+ ranked moves
-17.13%
against the close of 08/20/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
89.8% of the drop was recovered five sessions later.
Month end -6.23% on
Close before and after
$6.90 to $5.72 as traded
Session open, high, low
$6.45, $6.68, $5.70
Opening gap
-6.52%
Close inside the session range
0.02 of the range, where 1.00 is the high
Session volume
5,841,572 shares, $33,413,792
Relative volume
2.7x 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
70
BFRAMore than one ranked move this month2+ ranked moves
-16.96%
against the close of 08/17/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/04/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/11/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/18/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/11/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 78.7% bigger, at -29.85%.
Month end -43.25% on
Close before and after
$117.36 to $97.76 as traded
Session open, high, low
$108.00, $109.80, $96.64
Opening gap
-7.98%
Close inside the session range
0.08 of the range, where 1.00 is the high
Session volume
27,652 shares, $2,703,204
Relative volume
1.4x 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
75
ADVMMore than one ranked move this month2+ ranked moves
-16.63%
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/12/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
8.8% of the drop was recovered five sessions later.
Month end -5.15% on
Close before and after
$26.20 to $21.86 as traded
Session open, high, low
$22.51, $22.77, $20.37
Opening gap
-14.08%
Close inside the session range
0.62 of the range, where 1.00 is the high
Session volume
119,140 shares, $2,604,400
Relative volume
21.6x 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
77
AMTXMore than one ranked move this month2+ ranked moves
-16.47%
against the close of 08/12/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/05/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/06/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/25/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/06/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
23.9% of the drop was recovered five sessions later.
Month end -8.86% on
Close before and after
$715.36 to $600.32 as traded
Session open, high, low
$661.12, $675.52, $591.68
Opening gap
-7.58%
Close inside the session range
0.10 of the range, where 1.00 is the high
Session volume
166,958 shares, $100,228,227
Relative volume
4.3x 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
86
ADVMMore than one ranked move this month2+ ranked moves
-16.04%
against the close of 08/12/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/19/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/12/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/21/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/26/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/26/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/11/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/13/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/07/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
3.7% of the drop was recovered five sessions later.
Month end -14.99% on
Close before and after
$23.69 to $20.19 split-adjusted
Session open, high, low
$22.55, $22.64, $19.25
Opening gap
-4.81%
Close inside the session range
0.28 of the range, where 1.00 is the high
Session volume
3,063,035 shares, $61,842,677
Relative volume
4.2x 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
96
MARAMore than one ranked move this month2+ ranked moves
-14.76%
against the close of 08/21/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/17/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/26/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/10/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
against the close of 08/25/2020session reconstructedSession detailMarket cap is not shown on months older than a year, because only today's figure exists.
Five sessions later the drop was 121.0% bigger, at -32.27%.
Month end -21.79% on
This month ended before the fifth session after the move.
Close before and after
$21.57 to $18.42 split-adjusted
Session open, high, low
$21.42, $21.59, $17.66
Opening gap
-0.70%
Close inside the session range
0.19 of the range, where 1.00 is the high
Session volume
3,319,153 shares, $61,138,798
Relative volume
2.2x 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
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.249 smaller events this month are held out of this month's eligible pool; switch to include them.29 events never entered this month's eligible pool, because the ticker is a warrant, a unit, a right or a preferred rather than common stock, or carries a stored capitalization above $10 trillion, which is larger than any company has reached.Include the $5M to $25M band
2 events were left out of this board because the stored move and the session's own closing prices disagree by far more than a measurement difference, so neither figure could be published.
1 event was left out of this board because the price series changes basis between the baseline close and the measured one, so the two prices do not describe the same shares of the same company and their ratio measures a corporate action, or a change in what the ticker identifies, rather than a move.
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 August 2020, the median decliner’s drop was 12.9% larger five sessions later; the largest catalyst group was Earnings, 57 of the 100 events, at a median of -18.3%.
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.
Only 9 of these 10 events have a five-session follow-up, so no median is shown.
Only 9 of these 10 events have a five-session follow-up, so no share is shown.
Clinical Trial Results
7
7.0%
Fewer than 10 events in this group, so no figures are shown.
FDA & Regulatory
3
3.0%
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
100.0% of 100
6.4%larger drop, of 100
Day +5
97.0% of 99
12.9%larger drop, of 99
Month end
92.9% of 98
17.5%larger drop, of 98
Month end falls before day +5 for 11 of these 98 events, so this row is not a later horizon than the one above it. 98 of the 100 events have a month-end close later than the measured session; 1 has it on the measured session itself, and 1 has 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 August 2020
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-market38.0%
Intraday6.0%
After hours56.0%
Volume against normal
Under 5x37 events, 37.4%
5x to 20x45 events, 45.5%
Over 20x17 events, 17.2%
1 event has too little trading history for a relative volume, and is not in the tiers above.
Auto dealers & gasoline stations (retail)2 events, 2.0%
Computer integrated systems design2 events, 2.0%
22 other industries, 25 events
Industry not known: 42.0%
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 July 2020
100 events from July 2020 in the comparable window.
July 2020 median -15.0%, selected from the 4,594 events in that month's eligible pool.
August 2020 median -19.0%, 4.0 points steeper than July 2020. August 2020's median is taken over the 100 ranked rows, selected from the 4,439 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.
