Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Clearthink 1 Acquisition Corp.

CIK 0002094073CTAACTAARCTAAU· quarter ending 2026-06-30
Shares outstanding
17,001,667
Held by 13F filers
1,874,959
selection includes debt or preferreds — no % of shares outstanding
Holders
9
-27 vs 2026-03-31 · 1 new, 28 exited
Value
$18.8M
shares -84.4% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-17, as of 2026-08-14)

ClassListedShares outstandingHeld by 13F filers% of classHoldersCUSIP
Common Class ACTAA · NASDAQ12,830,00010,733,19783.7%31G2294A101
Common Class Bnot listed4,171,667——

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine
CountCUSIPClass (as filers write it)HoldersShares heldClass shares% of classValueOptionsMapped via
G2294A101ORD SHS CL A3110,733,19712,830,00083.7%$106.3M—13DGholders →
G2294A127UNIT 01/26/2031not common91,874,959——$18.8M—13DGholders →
G2294A119RIGHT 01/26/2031not common248,611,092——$2.0M—prefixholders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (9 of 9 · G2294A127)

change vs 2026-03-31
#FilerShares / principal% of classValueChange
1MANGROVE PARTNERS IM, LLC605,000—$6.1M—
2TORONTO DOMINION BANK376,470—$3.8M-100,300 (-21.0%)
3MIZUHO SECURITIES USA LLC351,056—$3.5M—
4BOOTHBAY FUND MANAGEMENT, LLC200,000—$2.0M—
5Yakira Capital Management, Inc.150,000—$1.5M—
6Lineage Point Capital LP129,300—$1.3M—
7Clear Street Group Inc.37,784—$381KNEW
8HRT FINANCIAL LP25,000—$252K—
9UBS Group AG349—$3K+250 (+252.5%)
Exited since 2026-03-31 (28 filers; largest 25 shown)
GLAZER CAPITAL, LLC−1,075,418
ARISTEIA CAPITAL, L.L.C.−800,000
AQR Arbitrage LLC−776,743
HIGHBRIDGE CAPITAL MANAGEMENT LLC−680,691
Harraden Circle Investments, LLC−659,832
Radcliffe Capital Management, L.P.−610,000
Magnetar Financial LLC−605,000
Polar Asset Management Partners Inc.−500,000
RIVERNORTH CAPITAL MANAGEMENT, LLC−500,000
BERKLEY W R CORP−497,000
BNP PARIBAS FINANCIAL MARKETS−428,257
WOLVERINE ASSET MANAGEMENT LLC−310,300
DLD Asset Management, LP−305,000
WHITEBOX ADVISORS LLC−300,000
Linden Advisors LP−250,000
Context Capital Management, LLC−250,000
TWO SIGMA INVESTMENTS, LP−226,562
Shaolin Capital Management LLC−200,000
Hudson Bay Capital Management LP−200,000
Cable Car Capital, LP−200,000
Kepos Capital LP−200,000
Centiva Capital, LP−150,000
HEIGHTS CAPITAL MANAGEMENT, INC−125,000
Warberg Asset Management LLC−98,500
ROYAL BANK OF CANADA−38,638

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting personFormFiledEventShares% of class
Highbridge Capital Management, LLCSCHEDULE 13G/A2026-08-142026-06-30897,2537.2%
Aristeia Capital, L.L.C.SCHEDULE 13G/A2026-08-142026-06-301,000,0007.99%
Frederick V. Fortmiller, Jr.SCHEDULE 13G/A2026-08-142026-06-3000%
Harraden Circle Investments, LLCSCHEDULE 13G/A2026-08-142026-06-3000%
Nathaniel AugustSCHEDULE 13G2026-07-202026-06-301,055,0008.43%
Mangrove Partners IM, LLCSCHEDULE 13G2026-07-202026-06-301,055,0008.43%
Glazer Capital, LLCSCHEDULE 13G2026-05-142026-03-311,075,4188.59%
Paul J. GlazerSCHEDULE 13G2026-05-142026-03-311,075,4188.59%
AQR Capital Management Holdings, LLCSCHEDULE 13G2026-05-132026-03-31776,7436.21%
AQR Capital Management, LLCSCHEDULE 13G2026-05-132026-03-31776,7436.21%
AQR Arbitrage, LLCSCHEDULE 13G2026-05-132026-03-31776,7436.21%
Harraden Circle Investors GP, LLCSCHEDULE 13G2026-03-032026-02-24659,8325.15%
Harraden Circle Strategic Investments, LPSCHEDULE 13G2026-03-032026-02-24109,0730.85%
Harraden Circle Special Opportunities, LPSCHEDULE 13G2026-03-032026-02-24141,5221.1%
Harraden Circle Investors, LPSCHEDULE 13G2026-03-032026-02-24409,2373.19%
Harraden Circle Investors GP, LPSCHEDULE 13G2026-03-032026-02-24659,8325.15%
Harraden Circle Concentrated, LPSCHEDULE 13G2026-03-032026-02-2400%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.