MOVER · UNEXPLAINED MOVE · WED SEP 23 2026

DCOY up 35.6% on Sep 23 2026 (dilution risk)

DCOY+35.6%on Wed Sep 23 2026

Decoy Therapeutics Inc. Common Stock was up 35.6% on the day at $4.20, ranked #1 on 122× its usual five-minute volume, when TapeRank recorded this spike at 04:59 ET during the pre-market session. TapeRank recorded 2 events for DCOY that day, between 04:59 and 13:25 ET, and each is in the timeline below.

THE DAY ON THE LIST · 2 EVENTS

  1. 04:59 ET
    MOVER · PRE-MARKET

    $4.20 · ▲ 35.6% ON THE DAY · 122× 5M RVOL · RANK #1

    DILUTION RISKCONFIDENCE5/5

    DCOY is up 19.4% pre-market after announcing a $3.85 million warrant exercise and a broader biodefense strategy focused on pursuing grants and public-health collaborations. The financing creates substantial potential share issuance relative to the 655K-share float proxy, while the largely exploratory, unquantified strategy news does not clearly support the size of the move.

    WHYA 19.4% move is large relative to an exploratory grant/partnership strategy, and the warrant transaction adds immediate dilution risk rather than a fundamental earnings or approval catalyst.
    ANALYZED 04:42 ET · 17 MIN AGO · OPENAI/GPT-5.6-LUNA
    THE ROW AND SESSION LEVELS AT 04:59 ET
    LAST4.20
    DAY▲ 35.6%
    5 MIN▲ 12.10%
    5M RVOL122×
    5M $VOL$554K
    FLOAT*655K
    RANK#1
    SESSIONPRE-MARKET
    VWAP3.90
    HOD4.02
    LOD3.63
    OR HIGH—
    OR LOW—
    PREV CLOSE3.10
    PM HIGH4.02
    PM LOW3.63
    GAP▲ 27.39% (indicated)

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

    — MEANS THE LEVEL DID NOT EXIST YET AT THAT INSTANT, NOT ZERO

  2. 13:25 ET
    UNEXPLAINED MOVE · REGULAR

    $3.90 · ▲ 25.9% ON THE DAY · 1.5× 5M RVOL · RANK #20

    UNEXPLAINEDNO FILINGS · RULE

    DCOY is up 26.1% on the day on 1.5x 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 13:25 ET · <1 MIN AGO · RULE, NO MODEL
    THE ROW AND SESSION LEVELS AT 13:25 ET
    LAST3.90
    DAY▲ 25.9%
    5 MIN▲ 2.74%
    5M RVOL1.5×
    5M $VOL$232K
    FLOAT*655K
    RANK#20
    SESSIONREGULAR
    VWAP4.39
    HOD4.71
    LOD3.75
    OR HIGH—
    OR LOW—
    PREV CLOSE3.10
    PM HIGH—
    PM LOW—
    GAP▲ 41.94%

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

    — MEANS THE LEVEL DID NOT EXIST YET AT THAT INSTANT, NOT ZERO

THE SESSION

  • 09:30 ETOpened at $4.40, +41.9% on the previous close of $3.10
  • 09:31 ETRegular-session high, $4.71
  • 12:40 ETRegular-session low, $3.75
  • 15:59 ETLast trade of the regular session, $3.83, +23.6% on the previous close of $3.10
  • Volume: 10.0M shares in regular hours, 16.4M before the open

DCOY opened at $4.40 after TapeRank ranked it the top premarket mover at $4.20, then reached a $4.71 high shortly after the open. TapeRank tied the early move to a $3.85 million warrant exercise, additional warrant issuance, and plans to pursue federal grants and public-health collaborations, while flagging dilution risk; the stock later fell to $3.75 and finished at $3.83. TapeRank recorded a later move at $3.90 as unexplained because no filings or headlines within 24 hours accounted for it, and there were no halts.

WRITTEN THU OCT 15 2026 17:54 ET BY OPENAI/GPT-5.6-LUNA FROM THE FACTS ON THIS PAGE

FILINGS AND NEWS · 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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