Why SEI rose 20.7% on Sep 9 2026: acquisition announcement
SEI+20.7%on Wed Sep 9 2026
Solaris Energy Infrastructure, Inc. was up 20.7% on the day at $66.40, ranked #8 on 8.5× its usual five-minute volume, when TapeRank recorded this spike at 09:23 ET during the pre-market session.
THE DAY ON THE LIST · 1 EVENT
- 09:23 ETMOVER · PRE-MARKET
$66.40 · ▲ 20.7% ON THE DAY · 8.5× 5M RVOL · RANK #8
STRETCHEDCONFIDENCE3/5Solaris Energy Infrastructure disclosed completion of an acquisition of Omega Foundation Services, funded via roughly 3.6 million newly issued shares plus about $77 million in cash, alongside an unregistered sale of equity securities. The stock is up nearly 20% pre-market on a filing that describes a bolt-on acquisition with modest share issuance relative to the 65.8 million share base, not a scale-changing event.
WHYA single acquisition adding under 6% to shares outstanding and an undisclosed revenue contribution does not typically justify a near-20% single-day move, making the size of the reaction stretched relative to the news.ANALYZED 09:19 ET · 3 MIN AGO · ANTHROPIC/CLAUDE-SONNET-5THE ROW AND SESSION LEVELS AT 09:23 ET
LAST66.40DAY▲ 20.7%5 MIN▲ 1.10%5M RVOL8.5×5M $VOL$561KFLOAT*65.8MRANK#8SESSIONPRE-MARKETVWAP65.03HOD66.06LOD60.30OR HIGH—OR LOW—PREV CLOSE55.00PM HIGH66.06PM LOW63.00GAP▲ 12.45%* 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 $66.88, +21.6% on the previous close of $55.00
- 10:20 ETRegular-session low, $65.22
- 15:26 ETRegular-session high, $69.34
- 15:59 ETLast trade of the regular session, $67.59, +22.9% on the previous close of $55.00
- Volume: 4.7M shares in regular hours, 20K before the open
SEI opened the session at $66.88, already up sharply after disclosing completion of its acquisition of Omega Foundation Services, funded through roughly 3.6 million new shares and about $77 million in cash. TapeRank's pre-market read flagged the reaction as stretched, with only moderate confidence that a bolt-on deal adding under 6% to shares outstanding justified a near-20% move. Shares dipped to $65.22 by 10:20 ET before climbing to a high of $69.34 at 15:26 ET, then eased to close the regular session at $67.59, up about 22.9% from the prior close.
WRITTEN THU OCT 15 2026 17:44 ET BY ANTHROPIC/CLAUDE-SONNET-5 FROM THE FACTS ON THIS PAGE
FILINGS · 24H BEFORE THE MOVE
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WHERE THE LIST STOODWED NOV 4 2026 · 13:49 ETRECORDED LIVE · 742 QUALIFY
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