Why ACET rose 22.2% on Sep 25 2026: clinical data announcement
ACET+22.2%on Fri Sep 25 2026
Adicet Bio, Inc. Common Stock was up 22.2% on the day at $10.11, ranked #5 on 43.7× its usual five-minute volume, when TapeRank recorded this spike at 16:05 ET during after hours. TapeRank recorded 2 events for ACET that day, between 16:01 and 16:05 ET, and each is in the timeline below.
THE DAY ON THE LIST · 2 EVENTS
- 16:01 ETUNEXPLAINED MOVE · AFTER-HOURS
$9.60 · ▲ 16.1% ON THE DAY · 7.4× 5M RVOL · RANK #6
UNEXPLAINEDNO FILINGS · RULEACET is up 7.5% on the day on 11.9x its normal volume for this time of day. No filings or headlines were found in SEC EDGAR filings and Benzinga wire headlines in the last 24 hours, so this is order flow rather than a disclosed catalyst.
WHYNo filings or headlines within 24 hours of the move.ANALYZED 15:54 ET · 6 MIN AGO · RULE, NO MODELTHE ROW AND SESSION LEVELS AT 16:01 ET
LAST9.60DAY▲ 16.1%5 MIN▲ 7.14%5M RVOL7.4×5M $VOL$325KFLOAT*9.4MRANK#6SESSIONAFTER-HOURSVWAP8.84HOD9.25LOD8.29OR HIGH—OR LOW—PREV CLOSE8.27PM HIGH—PM LOW—GAP▲ 0.24%* FLOAT IS SHARES OUTSTANDING; TRUE FREE FLOAT IS NOT AVAILABLE
— MEANS THE LEVEL DID NOT EXIST YET AT THAT INSTANT, NOT ZERO
- 16:05 ETMOVER · AFTER-HOURS
$10.11 · ▲ 22.2% ON THE DAY · 43.7× 5M RVOL · RANK #5
STRETCHEDCONFIDENCE5/5ACET rose 22.2% on the day and accelerated another 9.89% in five minutes after announcing that Phase 1 lupus CAR-T data will be reported on September 28. The announcement provides a near-term clinical-data catalyst, but it contains no results, efficacy, safety, or quantified update to support this magnitude of move.
WHYUp 22.2% on a scheduled announcement of forthcoming, undisclosed Phase 1 data is a much larger move than the news itself supports.ANALYZED 16:05 ET · <1 MIN AGO · OPENAI/GPT-5.6-LUNATHE ROW AND SESSION LEVELS AT 16:05 ET
LAST10.11DAY▲ 22.2%5 MIN▲ 9.89%5M RVOL43.7×5M $VOL$780KFLOAT*9.4MRANK#5SESSIONAFTER-HOURSVWAP9.08HOD10.11LOD8.29OR HIGH—OR LOW—PREV CLOSE8.27PM HIGH—PM LOW—GAP▲ 0.24%* FLOAT IS SHARES OUTSTANDING; TRUE FREE FLOAT IS NOT AVAILABLE
— MEANS THE LEVEL DID NOT EXIST YET AT THAT INSTANT, NOT ZERO
THE SESSION
ACET’s move was initially unexplained, with TapeRank recording the stock at $9.60 at 16:01 ET, up 16.1% from the previous close. By 16:05 ET, it had reached $10.11, up 22.2%, and TapeRank tied the acceleration to an announcement that Phase 1 lupus CAR-T data would be reported on September 28, while noting that no results, efficacy, safety, or quantified update had been provided; there were no halts. TapeRank also recorded no filings or headlines within 24 hours of either move.
WRITTEN THU OCT 15 2026 17:56 ET BY OPENAI/GPT-5.6-LUNA FROM THE FACTS ON THIS PAGE
FILINGS AND NEWS · 24H BEFORE THE MOVE
No SEC filings or wire news in the 24 hours before this was recorded. A move on news that never reached the wire shows nothing here, which is what UNEXPLAINED means.
On the tape right now
WHERE THE LIST STOODWED NOV 4 2026 · 13:49 ETRECORDED LIVE · 742 QUALIFY
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