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.

Blue Acquisition Corp/Cayman

CIK 0002059654BACCBACCRBACCU· quarter ending 2026-06-30
Shares outstanding
27,962,163
Held by 13F filers
17,535,024
83.9% of Common Class A
Holders
42
-7 vs 2026-03-31 · 2 new, 9 exited
Value
$185.9M
shares -7.6% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-11, as of 2026-08-11)

ClassListedShares outstandingHeld by 13F filers% of classHoldersCUSIP
Common Class ABACC · NASDAQ20,892,25017,535,02483.9%42G1331A108
Common Class Bnot listed7,069,913——

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
G1331A108ORD SHS CL A4217,535,02420,892,25083.9%$185.9M—13DGholders →
G1331A116RIGHT 06/11/2030not common4716,221,257——$12.2M—prefixholders →
G1331A124UNIT 06/02/2030not common7487,066——$5.5M—13DGholders →

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 (42 of 42 · G1331A108)

change vs 2026-03-31
#FilerShares% of classValueChange
1SONA ASSET MANAGEMENT (US) LLC3,342,35916.00%$35.4M—
2LMR Partners LLP1,915,4559.17%$20.3M—
3TENOR CAPITAL MANAGEMENT Co., L.P.1,747,3898.36%$18.5M+254,262 (+17.0%)
4Harraden Circle Investments, LLC1,064,7235.10%$11.3MNEW
5D. E. Shaw & Co., Inc.988,0544.73%$10.5M—
6Magnetar Financial LLC800,0003.83%$8.5M-398,763 (-33.3%)
7Linden Advisors LP775,0003.71%$8.2M—
8Alberta Investment Management Corp700,0003.35%$7.4M—
9MILLENNIUM MANAGEMENT LLC462,0932.21%$4.9M+108,304 (+30.6%)
10Davidson Kempner Capital Management LP459,8322.20%$4.9M—
11Radcliffe Capital Management, L.P.436,9002.09%$4.6M-85,326 (-16.3%)
12MOORE CAPITAL MANAGEMENT, LP400,0001.91%$4.2M—
13Lineage Point Capital LP382,7731.83%$4.1M-48,578 (-11.3%)
14AQR Arbitrage LLC342,6891.64%$3.6M-146,828 (-30.0%)
15Polar Asset Management Partners Inc.300,0001.44%$3.2M—
16GLAZER CAPITAL, LLC300,0001.44%$3.2M-194,718 (-39.4%)
17TORONTO DOMINION BANK300,0001.44%$3.2M+210,473 (+235.1%)
18RLH Capital LLC267,8311.28%$2.8M-103,169 (-27.8%)
19Centiva Capital, LP261,0001.25%$2.8MNEW
20MMCAP International Inc. SPC250,0001.20%$2.6M—
21Mint Tower Capital Management B.V.200,0000.96%$2.1M—
22DLD Asset Management, LP192,8660.92%$2.0M+161,600 (+516.9%)
23WHITEBOX ADVISORS LLC175,0000.84%$1.9M—
24BNP PARIBAS FINANCIAL MARKETS171,3450.82%$1.8M-9,050 (-5.0%)
25O'Connor Alternative Investments LLC150,0000.72%$1.6M-50,000 (-25.0%)
26READYSTATE ASSET MANAGEMENT LP150,0000.72%$1.6M—
27Quarry LP129,4000.62%$1.4M-98,600 (-43.2%)
28Verition Fund Management LLC125,0000.60%$1.3M-150,000 (-54.5%)
29Shaolin Capital Management LLC119,2500.57%$1.3M-77,996 (-39.5%)
30Periscope Capital Inc.100,0000.48%$1.1M-50,000 (-33.3%)
31Context Capital Management, LLC100,0000.48%$1.1M—
32PICTON MAHONEY ASSET MANAGEMENT92,5870.44%$981K-100,000 (-51.9%)
33MYDA Advisors LLC74,0000.35%$784K—
34HRT FINANCIAL LP54,0650.26%$573K+17,501 (+47.9%)
35JPMORGAN CHASE & CO49,9070.24%$518K-19 (-0.0%)
36Crossingbridge Advisors, LLC37,2690.18%$395K-73,283 (-66.3%)
37Clear Street Group Inc.35,9260.17%$381K-122,044 (-77.3%)
38ARISTEIA CAPITAL, L.L.C.35,2550.17%$374K-164,745 (-82.4%)
39Schonfeld Strategic Advisors LLC23,6810.11%$251K-71,319 (-75.1%)
40Kepos Capital LP22,9000.11%$243K—
41UBS Group AG4210.00%$4K+214 (+103.4%)
42MORGAN STANLEY540.00%$572-20 (-27.0%)
Exited since 2026-03-31 (9 filers; largest 9 shown)
Karpus Management, Inc.−645,990
BERKLEY W R CORP−441,650
Westchester Capital Management, LLC−247,210
K2 PRINCIPAL FUND, L.P.−79,015
CITADEL ADVISORS LLC−72,512
HEIGHTS CAPITAL MANAGEMENT, INC−33,455
METEORA CAPITAL, LLC−20,121
DELTEC ASSET MANAGEMENT LLC−20,000
WOLVERINE ASSET MANAGEMENT LLC−17,151

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
MAGNETAR CAPITAL PARTNERS LPSCHEDULE 13G/A2026-09-042026-06-3000%
DAVID J. SNYDERMANSCHEDULE 13G/A2026-09-042026-06-3000%
SUPERNOVA MANAGEMENT LLCSCHEDULE 13G/A2026-09-042026-06-3000%
MAGNETAR FINANCIAL LLCSCHEDULE 13G/A2026-09-042026-06-3000%
Tenor Opportunity Master Fund, Ltd.SCHEDULE 13G/A2026-08-142026-06-301,747,3898.4%
Frederick V. Fortmiller, Jr.SCHEDULE 13G2026-08-142026-06-301,064,7235.1%
Harraden Circle Investments, LLCSCHEDULE 13G2026-08-142026-06-301,064,7235.1%
Tenor Capital Management Company, L.P.SCHEDULE 13G/A2026-08-142026-06-301,747,3898.4%
Robin ShahSCHEDULE 13G/A2026-08-142026-06-301,747,3898.4%
Blue Holdings Management LLCSCHEDULE 13D/A2026-06-182026-06-167,160,91325.61%
Blue Holdings Sponsor LLCSCHEDULE 13D/A2026-06-182026-06-167,160,91325.61%
David BauerSCHEDULE 13D/A2026-06-182026-06-167,160,91325.61%
LMR Partners LLPSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
LMR Partners LLCSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
Ben LevineSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
LMR PARTNERS LtdSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
LMR Partners (Ireland) LimitedSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
LMR PARTNERS (DIFC) LtdSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
LMR Partners AGSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
Stefan RenoldSCHEDULE 13G/A2026-05-152026-03-311,915,4559.2%
SONA ASSET MANAGEMENT (UK) LLPSCHEDULE 13G/A2026-03-062026-02-283,342,35916%
Sona Asset Management LimitedSCHEDULE 13G/A2026-03-062026-02-283,342,35916%
SONA ASSET MANAGEMENT (US) LLCSCHEDULE 13G/A2026-03-062026-02-283,342,35916%
Sona Asset Management Cayman LimitedSCHEDULE 13G/A2026-03-062026-02-283,342,35916%
John AylwardSCHEDULE 13G/A2026-03-062026-02-283,342,35916%
The Merger FundSCHEDULE 13G/A2026-02-132025-12-31333,4571.6%
Virtus Investment Advisers, LLCSCHEDULE 13G/A2026-02-132025-12-31346,4371.66%
Westchester Capital Management, LLCSCHEDULE 13G/A2026-02-132025-12-31369,5851.77%
Westchester Capital Partners, LLCSCHEDULE 13G/A2026-02-132025-12-311,1570.01%
Barclays PLCSCHEDULE 13G/A2026-02-112025-12-3195,3820.45%
Ketan SethSCHEDULE 13D2025-06-232025-06-167,160,91325.61%

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.