TAPERANK
Open the app
UNEXPLAINED MOVE · THU OCT 29 2026

Why GDYN rose 17.4% on Oct 29 2026: earnings beat

GDYN+17.4%on Thu Oct 29 2026

Grid Dynamics Holdings, Inc. Class A Common Stock was up 17.4% on the day at $10.27, ranked #79 on 2.8× its usual five-minute volume, when TapeRank recorded this unexplained move at 16:06 ET during after hours.

THE DAY ON THE LIST · 1 EVENT

  1. 16:06 ET
    UNEXPLAINED MOVE · AFTER-HOURS

    $10.27 · ▲ 17.4% ON THE DAY · 2.8× 5M RVOL · RANK #79

    JUSTIFIEDCONFIDENCE5/5

    GDYN is up 12.0% on a quarterly earnings release showing adjusted EPS of $0.18 versus $0.13 expected and sales modestly above estimates. The earnings beat is a concrete catalyst that reasonably supports a double-digit move, though the sales surprise was limited.

    WHYUp 12.0% on a 38% EPS beat and 1.35% sales beat is broadly proportionate to the earnings news.
    ANALYZED 16:18 ET · <1 MIN AGO · OPENAI/GPT-5.6-LUNA
    THE ROW AND SESSION LEVELS AT 16:06 ET
    LAST10.27
    DAY▲ 17.4%
    5 MIN▲ 5.33%
    5M RVOL2.8×
    5M $VOL$142K
    FLOAT*81.1M
    RANK#79
    SESSIONAFTER-HOURS
    VWAP9.22
    HOD10.29
    LOD8.48
    OR HIGH8.65
    OR LOW8.48
    PREV CLOSE8.75
    PM HIGH8.64
    PM LOW8.50
    GAP▼ 2.97%

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

THE SESSION

  • 09:30 ETOpened at $8.49, -3.0% on the previous close of $8.75
  • 09:32 ETRegular-session low, $8.48
  • 15:54 ETRegular-session high, $9.63
  • 15:59 ETLast trade of the regular session, $9.49, +8.5% on the previous close of $8.75
  • Volume: 3.8M shares in regular hours, 4K before the open

GDYN opened at $8.49, slipped to $8.48 early, and then climbed through the session to a $9.63 high before ending regular trading at $9.49, up 8.5% from the previous close. There were no halts, and TapeRank later recorded the stock at $10.27 after the close; TapeRank’s read tied the move to an earnings beat showing adjusted EPS of $0.18 versus $0.13 expected and sales modestly above estimates, judging the catalyst justified with 5/5 confidence.

WRITTEN THU OCT 29 2026 20:00 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

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
Open the full list