UNEXPLAINED MOVE · MOVER · MON SEP 21 2026

Why MX rose 26.2% on Sep 21 2026: strategic equity investment

MX+26.2%on Mon Sep 21 2026

Magnachip Semiconductor Corp. was up 26.2% on the day at $3.47, ranked #4 on 241× its usual five-minute volume, when TapeRank recorded this spike at 08:37 ET during the pre-market session. TapeRank recorded 2 events for MX that day, between 07:02 and 08:37 ET, and each is in the timeline below.

THE DAY ON THE LIST · 2 EVENTS

  1. 07:02 ET
    UNEXPLAINED MOVE · PRE-MARKET

    $3.17 · ▲ 15.3% ON THE DAY · 747× 5M RVOL · RANK #14

    UNEXPLAINEDNO FILINGS · RULE

    MX is up 11.3% on the day on 290x 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 07:01 ET · 1 MIN AGO · RULE, NO MODEL
    THE ROW AND SESSION LEVELS AT 07:02 ET
    LAST3.17
    DAY▲ 15.3%
    5 MIN▲ 11.23%
    5M RVOL747×
    5M $VOL$417K
    FLOAT*36.5M
    RANK#14
    SESSIONPRE-MARKET
    VWAP3.07
    HOD3.30
    LOD2.80
    OR HIGH—
    OR LOW—
    PREV CLOSE2.75
    PM HIGH3.30
    PM LOW2.80
    GAP▲ 12.91% (indicated)

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

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

  2. 08:37 ET
    MOVER · PRE-MARKET

    $3.47 · ▲ 26.2% ON THE DAY · 241× 5M RVOL · RANK #4

    STRETCHEDCONFIDENCE5/5

    MX is up 29.1% pre-market after Navitas agreed to invest $5 million through a private purchase of 1,461,988 shares at $3.42. The strategic validation and funding are concrete, but the roughly 1.5 million new shares and modest investment do not proportionally support a move of this size.

    WHYUp 29.1% on a $5 million strategic equity investment with 1.46 million shares issued, making the move materially larger than the disclosed news.
    ANALYZED 08:55 ET · <1 MIN AGO · OPENAI/GPT-5.6-LUNA
    THE ROW AND SESSION LEVELS AT 08:37 ET
    LAST3.47
    DAY▲ 26.2%
    5 MIN▲ 5.47%
    5M RVOL241×
    5M $VOL$503K
    FLOAT*36.5M
    RANK#4
    SESSIONPRE-MARKET
    VWAP3.17
    HOD3.55
    LOD2.80
    OR HIGH—
    OR LOW—
    PREV CLOSE2.75
    PM HIGH3.55
    PM LOW2.80
    GAP▲ 28.36% (indicated)

    * 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 $3.47, +26.2% on the previous close of $2.75
  • 09:30 ETRegular-session high, $3.49
  • 09:44 ETRegular-session low, $3.09
  • 15:59 ETLast trade of the regular session, $3.20, +16.4% on the previous close of $2.75
  • Volume: 3.2M shares in regular hours, 1.2M before the open

MX opened at $3.47 after TapeRank first recorded an unexplained move at $3.17, then reached $3.49 before falling to the session low of $3.09 at 09:44 ET. It ended at $3.20, still 16.4% above the previous close, with no trading halts. TapeRank tied the move to Navitas’s agreed $5 million strategic equity investment through a private purchase of 1,461,988 shares at $3.42, while reading the advance as stretched because the disclosed investment and new shares did not proportionally support a move of that size.

WRITTEN THU OCT 15 2026 17:52 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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