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UNEXPLAINED MOVE · WED SEP 9 2026

FSLY up 15.9% on Sep 9 2026 with no filing that explains it

FSLY+15.9%on Wed Sep 9 2026

Fastly, Inc. Class A Common Stock was up 15.9% on the day at $23.86, ranked #24 on 4.1× its usual five-minute volume, when TapeRank recorded this unexplained move at 09:55 ET during regular hours.

THE DAY ON THE LIST · 1 EVENT

  1. 09:55 ET
    UNEXPLAINED MOVE · REGULAR

    $23.86 · ▲ 15.9% ON THE DAY · 4.1× 5M RVOL · RANK #24

    UNEXPLAINEDCONFIDENCE4/5

    Fastly is up 10.2% on 30x normal volume with no material news, only a routine Form 4 insider transaction filing that does not typically move stocks of this size. The recent pullback in the last five minutes suggests the initial pop is already fading, consistent with order-flow-driven action rather than a fundamental catalyst.

    WHYA single insider Form 4 filing is a minor, largely uninformative disclosure, yet the stock moved 10.2% on extreme volume, a mismatch that points to no real catalyst behind the size of the move.
    ANALYZED 09:30 ET · 24 MIN AGO · ANTHROPIC/CLAUDE-SONNET-5
    THE ROW AND SESSION LEVELS AT 09:55 ET
    LAST23.86
    DAY▲ 15.9%
    5 MIN▲ 3.94%
    5M RVOL4.1×
    5M $VOL$6.3M
    FLOAT*159.3M
    RANK#24
    SESSIONREGULAR
    VWAP22.86
    HOD23.89
    LOD19.92
    OR HIGH23.45
    OR LOW22.55
    PREV CLOSE20.59
    PM HIGH23.30
    PM LOW21.39
    GAP▼ 1.17%

    * FLOAT IS SHARES OUTSTANDING; TRUE FREE FLOAT IS NOT AVAILABLE

THE SESSION

  • 09:30 ETOpened at $22.69, +10.2% on the previous close of $20.59
  • 09:36 ETRegular-session low, $22.09
  • 10:05 ETRegular-session high, $24.59
  • 15:59 ETLast trade of the regular session, $22.72, +10.3% on the previous close of $20.59
  • Volume: 9.5M shares in regular hours, 207K before the open

Fastly opened at $22.69, up 10.2% from the prior close of $20.59 on heavy volume, then slipped to a low of $22.09 by 09:36 ET before rallying to a session high of $24.59 at 10:05 ET. TapeRank flagged the move as unexplained at 09:30 ET and again at 09:55 ET, noting only a routine Form 4 insider transaction filing on the books, which it judged too minor to account for the size of the move on such elevated volume. No halts occurred, and shares closed the regular session at $22.72, up 10.3% on the day.

WRITTEN THU OCT 15 2026 17:43 ET BY ANTHROPIC/CLAUDE-SONNET-5 FROM THE FACTS ON THIS PAGE

FILINGS · 24H BEFORE THE MOVE

On the tape right now

WHERE THE LIST STOODWED NOV 4 2026 · 13:49 ETRECORDED LIVE · 742 QUALIFY

01
ECGSURGING 0:05
79.71
▼ 29.3%
▼ 1.41%
41.0×
FAD
$6.2M
51.1M*
STRETCHED
02
CAVASURGING 0:00
64.78
▲ 7.4%
▲ 1.30%
9.3×
ORBHODVWH
$11.6M
116.8M*
UNEXPLAINED
03
URGNSURGING 0:00
29.16
▼ 15.2%
▼ 1.29%
15.6×
FAD
$1.4M
48.9M*
JUSTIFIED
04
MPTISURGING 0:00
64.15
▼ 1.5%
▲ 0.96%
23.8×
VWH
$637K
4.3M*
UNEXPLAINED
05
LSPDSURGING 0:00
11.52
▲ 4.9%
▼ 1.24%
16.5×
ORB
$426K
133.3M*
UNEXPLAINED
06
CRCTSURGING 0:00
8.90
▲ 49.2%
▼ 0.72%
15.1×
GAPORBVWHEXT
$395K
54.7M*
STRETCHED
07
BROSSURGING 0:00
43.97
▲ 0.9%
▼ 0.91%
4.0×
FAD
$4.3M
137.9M*
UNEXPLAINED
08
LMRICOOLING 1:35
12.85
▲ 14.5%
▲ 1.06%
132×
ORBHODVWH
$1.7M
—
UNEXPLAINED
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