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OHAC · Oceanhawk Acquisition Corp. · Holdings

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$10.01 +0.01 (+0.10%) At close · Oct 27
Rebalance outlook locked
Going-concern doubt — flagged Aug 14, 2026

Substantial doubt about the company's ability to continue as a going concern.

“we have determined that mandatory liquidation, should we not complete a Business Combination and an extension of our deadline to do so not be approved by the shareholders of the Company, and potential subsequent dissolution and the liquidity issue raise substantial doubt about the Company's ability to continue as a going concern if it does not complete a Business Combination. As of June 30, 2026, the Company had $223,887 in cash and a working capital deficit of $210,981. The Company has incurred and expects to continue to incur significant costs as a publicly traded company, to evaluate business opportunities, and to close on a Business Combination. Such costs will be incurred prior to generating any operating revenues. These factors also raise substantial doubt about the Company's ability to continue as a going concern within one year after the date that the financial statements are issued.”
View the 10-Q filed Aug 14, 2026
Market Cap
$250.63M
Shares
25.06M
Volume · Oct 27 142 Avg daily vol (3M) 52.61K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of OHAC: 13F, 13D and 13G, insiders and funds →
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 48
Total Value: $188,034,749
Total Shares: 31,840,329

Institutional Ownership Trend

2 quarters

Holder Concentration

Across 48 13F filers
Top Holder
8.1%
of institutional value
Top 5
29.8%
of institutional value
Top 10
50.1%
of institutional value
HHI
372
Broadly held

Who Holds OHAC

Last 2 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 48 filers, like-for-like change —.

Holder type Share Filers Change
Registered adviser 70.9% 27 new
Exempt adviser 1.7% 2 new
Adviser 2.7% 2 new
Bank 3.8% 2 new
Insurer 1.5% 1 new
Non-US 4.9% 3 new
Unknown 14.4% 11 new

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

45 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
1
2.22% of filers hold it in their top 10
Holders above 5%
0
median weight 0.162%
Crowding
—
no cover-page share count is dated within about a year of the quarter end
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
no cover-page share count is dated within about a year of the quarter end
Top 10 holders
50.1%
of 13F shares, Herfindahl 0.037
Active holders
—
like-for-like share change of active filers
5% stakes on record
6
0 13D, 6 13G (5 institutional, 1 passive, 0 exempt)
How long holders have held it value-weighted 1.0 quarters
Under 1 year 100.0% 1 to 3 years 0.000% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Shared Holders

Companies OHAC's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 ARCL ARC Group Acquisition I Corp. 9
2 QUMS Quantumsphere Acquisition Corp 8
3 BREZ Breeze Acquisition Corp. II 10
4 XSLL Xsolla SPAC 1 11
5 VECA Vernal Capital Acquisition Corp. 6
6 ETSS Energy Transition Special Opportunities 5
7 KTWO K2 Capital Acquisition Corp 8
8 GIX GigCapital9 Corp. 11
9 CAES Cantor Equity Partners VII, Inc. 10
10 SOUL Soulpower Acquisition Corp. 11

Shareholder Targets

13F filers that own its peers but not OHAC, quarter ended Jun 30, 2026

Found through its holder-overlap peers: ARCL, QUMS, BREZ, XSLL, VECA, ETSS, KTWO, GIX, CAES, SOUL, IPCX, EVAC, XFLH, ARTC, FSHP, FWAC, NMP, IPEX, APXT, KFII. 84 filers in all.

# Filer In peers
1 D. E. Shaw & Co., Inc. Unknown, Systematic-like $87,563,991 14 held
2 Westchester Capital Management, LLC Registered adviser, Diversified active $78,621,239 14 held
3 Alberta Investment Management Corp Non-US, Concentrated $66,087,660 7 held
4 Radcliffe Capital Management, L.P. Registered adviser, Diversified active $61,918,704 18 held
5 MILLENNIUM MANAGEMENT LLC Registered adviser, Systematic-like $56,419,665 10 held
6 METEORA CAPITAL, LLC Adviser, Diversified active $45,592,801 14 held
7 MANGROVE PARTNERS IM, LLC Registered adviser, Diversified active $39,553,117 9 held
8 First Trust Capital Management L.P. Registered adviser, Diversified active $37,255,336 9 held
9 MMCAP International Inc. SPC Unknown, Diversified active $32,246,646 3 held
10 Lineage Point Capital LP Adviser, Diversified active $29,828,837 11 held
Holder type: Registered adviser 27 Exempt adviser 2 Adviser 2 Bank 2 Insurer 1 Non-US 3 Unknown 11
Showing 73 of 73
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
HIGHBRIDGE CAPITAL MANAGEMENT LLC $14,850,000 7.90% 1,500,000
ADAGE CAPITAL PARTNERS GP, L.L.C. $10,642,500 5.66% 1,075,000
CSS LLC/IL $10,282,239 5.47% 1,038,610
Magnetar Financial LLC $9,764,568 5.19% 986,320
Polar Asset Management Partners Inc. $9,405,000 5.00% 950,000
SONA ASSET MANAGEMENT (US) LLC $8,415,000 4.48% 850,000
StoneX Group Inc. $8,388,467 4.46% 847,320
ARISTEIA CAPITAL, L.L.C. $7,425,000 3.95% 750,000
WOLVERINE ASSET MANAGEMENT LLC $6,689,479 3.56% 675,705
Karpus Management, Inc. $6,655,770 3.54% 672,300
TORONTO DOMINION BANK $6,519,862 3.47% 658,572
Hudson Bay Capital Management LP $6,187,500 3.29% 625,000
Context Capital Management, LLC $5,445,000 2.90% 550,000
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND $5,445,000 2.90% 550,000
GLAZER CAPITAL, LLC $5,346,000 2.84% 540,000
Shaolin Capital Management LLC $4,975,492 2.65% 502,575
AQR Arbitrage LLC $4,777,542 2.54% 482,580
BERKLEY W R CORP $4,678,047 2.49% 472,530
BNP PARIBAS ARBITRAGE, SA $4,132,458 2.20% 417,420
Parallax Volatility Advisers, L.P. $3,972,355 2.11% 401,248
RIVERNORTH CAPITAL MANAGEMENT, LLC $3,960,000 2.11% 400,000
WHITEBOX ADVISORS LLC $3,217,500 1.71% 325,000
TWO SIGMA INVESTMENTS, LP $2,871,000 1.53% 290,000
Calamos Advisors LLC $2,722,500 1.45% 275,000
LMR Partners LLP $2,475,000 1.32% 250,000
Clear Street Group Inc. $2,095,236 1.11% 211,640
Quarry LP $2,083,890 1.11% 210,494
Crossingbridge Advisors, LLC $1,980,000 1.05% 200,000
K2 PRINCIPAL FUND, L.P. $1,980,000 1.05% 200,000
MOORE CAPITAL MANAGEMENT, LP $1,980,000 1.05% 200,000
Kepos Capital LP $1,786,950 0.95% 180,500
BOOTHBAY FUND MANAGEMENT, LLC $1,732,519 0.92% 175,002
Periscope Capital Inc. $1,732,500 0.92% 175,000
PICTON MAHONEY ASSET MANAGEMENT $1,584,000 0.84% 160,000
MIZUHO SECURITIES USA LLC $1,551,854 0.83% 156,753
DLD Asset Management, LP $1,485,000 0.79% 150,000
RLH Capital LLC $1,341,390 0.71% 135,494
TENOR CAPITAL MANAGEMENT Co., L.P. $1,237,500 0.66% 125,000
HEIGHTS CAPITAL MANAGEMENT, INC $1,237,500 0.66% 125,000
DELTEC ASSET MANAGEMENT LLC $499,800 0.27% 49,980
Centiva Capital, LP $495,000 0.26% 50,000
Harraden Circle Investments, LLC OHACR $403,433 0.21% 1,551,667
HIGHBRIDGE CAPITAL MANAGEMENT LLC OHACR $390,000 0.21% 1,500,000
ABC ARBITRAGE SA $300,000 0.16% 30,000
ADAGE CAPITAL PARTNERS GP, L.L.C. OHACR $279,500 0.15% 1,075,000
Polar Asset Management Partners Inc. OHACR $247,000 0.13% 950,000
CSS LLC/IL OHACR $236,080 0.13% 227,000
SONA ASSET MANAGEMENT (US) LLC OHACR $221,000 0.12% 850,000
ARISTEIA CAPITAL, L.L.C. OHACR $195,000 0.10% 750,000
K2 PRINCIPAL FUND, L.P. OHACR $176,554 0.09% 706,216
Linden Advisors LP OHACR $153,700 0.08% 580,000
TORONTO DOMINION BANK OHACR $145,127 0.08% 558,180
Shaolin Capital Management LLC OHACR $143,072 0.08% 550,275
AQR Arbitrage LLC OHACR $125,471 0.07% 482,580
HRT FINANCIAL LP $121,007 0.06% 12,223
BNP PARIBAS ARBITRAGE, SA OHACR $104,355 0.06% 417,420
Hudson Bay Capital Management LP OHACR $97,500 0.05% 375,000
LONGFELLOW INVESTMENT MANAGEMENT CO LLC $88,347 0.05% 8,924
Parallax Volatility Advisers, L.P. OHACR $87,450 0.05% 330,000
WHITEBOX ADVISORS LLC OHACR $84,500 0.04% 325,000
Alpine Global Management, LLC OHACR $75,000 0.04% 300,000
WOLVERINE ASSET MANAGEMENT LLC OHACR $52,789 0.03% 203,034
Clear Street Group Inc. OHACR $49,590 0.03% 190,730
DLD Asset Management, LP OHACR $39,750 0.02% 150,000
Periscope Capital Inc. OHACR $33,125 0.02% 125,000
TENOR CAPITAL MANAGEMENT Co., L.P. OHACR $32,500 0.02% 125,000
BOOTHBAY FUND MANAGEMENT, LLC OHACR $26,000 0.01% 100,000
StoneX Group Inc. OHACR $24,887 0.01% 99,549
UBS Group AG $24,245 0.01% 2,449
HEIGHTS CAPITAL MANAGEMENT, INC OHACR $18,210 0.01% 70,039
Centiva Capital, LP OHACR $13,000 0.01% 50,000
GLAZER CAPITAL, LLC OHACR $139 0.00% 525,000
ABC ARBITRAGE SA OHACR — — 30,000
Key facts CIK 2090787 CUSIP G6722R107 13F (30d) 2 filings 2 filers