Vault-13

BLUE ACQUISITION CORP. BACC

ORD SHS CL A · Common Stock · CUSIP G1331A108

42 institutional holders -7 vs Q1 2026
17,535,02417.5m shares reported held*
$185.9mreported value*
2 new 6 added 19 reduced 9 sold out net sold ≈ $15.3m (-1.4m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $10.60.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q3 25: 44Q4 25: 53Q1 26: 49Q2 26: 4242Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q3 202544
Q4 202553
Q1 202649
Q2 202642

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q4 25: 20 bought or addedQ4 25: 24 cut or sold outQ4 25Q1 26: 18 bought or addedQ1 26: 18 cut or sold outQ1 26Q2 26: 8 bought or addedQ2 26: 28 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q4 20252024
Q1 20261818
Q2 2026828

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$5k$10k$15k$20kQ3 25 calls: $16.1kQ3 25 puts: $0Q3 25P/C 0.00Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —Q1 26 calls: $0Q1 26 puts: $0Q1 26P/C —Q2 26 calls: $0Q2 26 puts: $0Q2 26P/C —
Numbers
QuarterCallsPutsP/C
Q3 2025$16.1k$00.00
Q4 2025$0$0—
Q1 2026$0$0—
Q2 2026$0$0—

Biggest buyers

Harraden Circle Investments, LLC New +1,064,723+1.1m
Centiva Capital, LP New +261,000+261.0k
TENOR CAPITAL MANAGEMENT Co., L.P. Added +254,262+254.3k
TORONTO DOMINION BANK Added +210,473+210.5k
DLD Asset Management, LP Added +161,600+161.6k
MILLENNIUM MANAGEMENT LLC Added +108,304+108.3k
HRT FINANCIAL LP Added +17,501+17.5k
UBS Group AG Added +214+214

Biggest sellers

Karpus Management, Inc. Sold out -645,990-646.0k
BERKLEY W R CORP Sold out -441,650-441.6k
Magnetar Financial LLC Reduced -398,763-398.8k
Westchester Capital Management, LLC Sold out -247,210-247.2k
GLAZER CAPITAL, LLC Reduced -194,718-194.7k
ARISTEIA CAPITAL, L.L.C. Reduced -164,745-164.7k
Verition Fund Management LLC Reduced -150,000-150.0k
AQR Arbitrage LLC Reduced -146,828-146.8k
Clear Street Group Inc. Reduced -122,044-122.0k
RLH Capital LLC Reduced -103,169-103.2k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Blue Holdings Sponsor LLC 13D · may seek influence filed 2026-06-18
Stated purposeFounder Shares On February 20, 2025, the Sponsor acquired an aggregate of 6,049,925 Class B ordinary shares, for $25,000, or approximately $0.004 per share. In May 2025, the Issuer issued an additional 1,009,988 Class B ordinary shares to the Sponsor in a share capitalization resulting in the Sponsor holding a total of 7,069,913 Class B ordinary shares (the "Founder Shares"), of which up to 922,163 Class B ordinary shares were subject to forfeiture to the extent the underwriter did not exercise its over-allotment option in connection with the Issuer's initial public offering (the "IPO") in full. At the closing of the IPO, the underwriter exercised the over-allotment option in full and as a result, no Founder Shares were forfeited. The Founder Shares will automatically convert into shares o… Full filing
 25.6% 7.2m≈ $75.9m 2026-06-18
Seth Ketan 13D · may seek influence new · filed 2025-06-23
Stated purposeFounder Shares On February 20, 2025, the Sponsor acquired an aggregate of 6,049,925 Class B ordinary shares, for $25,000, or approximately $0.004 per share. In May 2025, the Issuer issued an additional 1,009,988 Class B ordinary shares to the Sponsor in a share capitalization resulting in the Sponsor holding a total of 7,069,913 Class B ordinary shares (the "Founder Shares"), of which up to 922,163 Class B ordinary shares were subject to forfeiture to the extent the underwriter did not exercise its over-allotment option in connection with the Issuer's initial public offering (the "IPO") in full. At the closing of the IPO, the underwriter exercised the over-allotment option in full and as a result, no Founder Shares were forfeited. The Founder Shares will automatically convert into shares … Full filing
 25.6% new 7.2m≈ $75.9m 2025-06-23
SONA ASSET MANAGEMENT (US) LLC 13G · institution +6.6 pts · filed 2026-03-06 16.0% +6.6 pts 3.3m≈ $35.4m 2026-03-06
LMR Partners LLP 13G · institution +1.8 pts · filed 2026-05-15 9.2% +1.8 pts 1.9m≈ $20.3m 2026-05-15
Harraden Circle Investments, LLC 13G · institution new · filed 2026-08-14 5.1% new 1.1m≈ $11.3m 2026-08-14

Fell to 5% or below in the last year: Magnetar Financial LLC (0.0%, 2026-09-04), Westchester Capital Management, LLC (1.8%, 2026-02-13), BARCLAYS PLC (0.5%, 2026-02-11)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
202Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 2 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20252—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20260—0——
Q3 20260—0——

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 SONA ASSET MANAGEMENT (US) LLC 1.32% of their portfolio NEW YORK, NY 3,342,3593.3m $35.4m $35.4m 1.32% Unchanged
2 LMR Partners LLP 0.15% of their portfolio LONDON, X0 1,915,4551.9m $20.3m $20.3m 0.15% Unchanged
3 TENOR CAPITAL MANAGEMENT Co., L.P. 0.26% of their portfolio NEW YORK, NY 1,747,3891.7m $18.5m $18.5m 0.26% Added +254.3k +254,262
4 Harraden Circle Investments, LLC 1.44% of their portfolio NEW YORK, NY 1,064,7231.1m $11.3m $11.3m 1.44% New
5 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 988,054988.1k $10.5m $10.5m 0.01% Unchanged
6 Magnetar Financial LLC 0.08% of their portfolio EVANSTON, IL 800,000800.0k $8.5m $8.5m 0.08% Reduced -398.8k -398,763
7 Linden Advisors LP 0.04% of their portfolio New York, NY 775,000775.0k $8.2m $8.2m 0.04% Unchanged
8 Alberta Investment Management Corp 0.04% of their portfolio EDMONTON, A0 700,000700.0k $7.4m $7.4m 0.04% Unchanged
9 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 462,093462.1k $4.9m $4.9m 0.00% Added +108.3k +108,304
10 Davidson Kempner Capital Management LP 0.08% of their portfolio New York, NY 459,832459.8k $4.9m $4.9m 0.08% Unchanged
11 Radcliffe Capital Management, L.P. 0.35% of their portfolio BALA CYNWYD, PA 436,900436.9k $4.6m $4.6m 0.35% Reduced -85.3k -85,326
12 MOORE CAPITAL MANAGEMENT, LP 0.10% of their portfolio NEW YORK, NY 400,000400.0k $4.2m $4.2m 0.10% Unchanged
13 Lineage Point Capital LP 0.83% of their portfolio PALM BEACH, FL 382,773382.8k $4.1m $4.1m 0.83% Reduced -48.6k -48,578
14 AQR Arbitrage LLC 0.05% of their portfolio Greenwich, CT 342,689342.7k $3.6m $3.6m 0.05% Reduced -146.8k -146,828
15 TORONTO DOMINION BANK 0.01% of their portfolio TORONTO, ONTARIO, A6 300,000300.0k $3.2m $3.2m 0.01% Added +210.5k +210,473
16 GLAZER CAPITAL, LLC 0.08% of their portfolio New York, NY 300,000300.0k $3.2m $3.2m 0.08% Reduced -194.7k -194,718
17 Polar Asset Management Partners Inc. 0.06% of their portfolio TORONTO, A6 300,000300.0k $3.2m $3.2m 0.06% Unchanged
18 RLH Capital LLC 1.36% of their portfolio Great Neck, NY 267,831267.8k $2.8m $2.8m 1.36% Reduced -103.2k -103,169
19 Centiva Capital, LP 0.09% of their portfolio New York, NY 261,000261.0k $2.8m $2.8m 0.09% New
20 MMCAP International Inc. SPC 0.22% of their portfolio GRAND CAYMAN, E9 250,000250.0k $2.6m $2.6m 0.22% Unchanged
21 Mint Tower Capital Management B.V. 0.25% of their portfolio AMSTERDAM, P7 200,000200.0k $2.1m $2.1m 0.25% Unchanged
22 DLD Asset Management, LP 0.17% of their portfolio NEW YORK, NY 192,866192.9k $2.0m $2.0m 0.17% Added +161.6k +161,600
23 WHITEBOX ADVISORS LLC 0.03% of their portfolio MINNEAPOLIS, MN 175,000175.0k $1.9m $1.9m 0.03% Unchanged
24 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 171,345171.3k $1.8m $1.8m 0.00% Reduced -9.1k -9,050
25 READYSTATE ASSET MANAGEMENT LP 0.06% of their portfolio CHICAGO, IL 150,000150.0k $1.6m $1.6m 0.06% Unchanged
26 O'Connor Alternative Investments LLC 0.12% of their portfolio NEW YORK, NY 150,000150.0k $1.6m $1.6m 0.12% Reduced -50.0k -50,000
27 Quarry LP 0.22% of their portfolio NEW YORK, NY 129,400129.4k $1.4m $1.4m 0.22% Reduced -98.6k -98,600
28 Verition Fund Management LLC 0.01% of their portfolio GREENWICH, CT 125,000125.0k $1.3m $1.3m 0.01% Reduced -150.0k -150,000
29 Shaolin Capital Management LLC 0.07% of their portfolio Miami, FL 119,250119.2k $1.3m $1.3m 0.07% Reduced -78.0k -77,996
30 Context Capital Management, LLC 0.02% of their portfolio LAJOLLA, CA 100,000100.0k $1.1m $1.1m 0.02% Unchanged
31 Periscope Capital Inc. 0.17% of their portfolio Toronto, A6 100,000100.0k $1.1m $1.1m 0.17% Reduced -50.0k -50,000
32 PICTON MAHONEY ASSET MANAGEMENT 0.01% of their portfolio Toronto, A6 92,58792.6k $981.4k $981.4k 0.01% Reduced -100.0k -100,000
33 MYDA Advisors LLC 0.19% of their portfolio WOODMERE, NY 74,00074.0k $784.4k $784.4k 0.19% Unchanged
34 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 54,06554.1k $573.0k $573.0k 0.00% Added +17.5k +17,501
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 49,90749.9k $517.5k $517.5k 0.00% Reduced -19 -19
36 Crossingbridge Advisors, LLC 0.07% of their portfolio PLEASANTVILLE, NY 37,26937.3k $395.1k $395.1k 0.07% Reduced -73.3k -73,283
37 Clear Street Group Inc. 0.00% of their portfolio NEW YORK, NY 35,92635.9k $380.8k $380.8k 0.00% Reduced -122.0k -122,044
38 ARISTEIA CAPITAL, L.L.C. 0.01% of their portfolio GREENWICH, CT 35,25535.3k $373.7k $373.7k 0.01% Reduced -164.7k -164,745
39 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 23,68123.7k $251.0k $251.0k 0.00% Reduced -71.3k -71,319
40 Kepos Capital LP 0.33% of their portfolio NEW YORK, NY 22,90022.9k $243.0k $243.0k 0.33% Unchanged
41 UBS Group AG 0.00% of their portfolio ZURICH, V8 421421 $4.5k $4.5k 0.00% Added +214 +214
42 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 5454 $572 $572 0.00% Reduced -20 -20