Oceanhawk Acquisition (OHAC): which funds own it
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Sections with a free account
No concentrated manager holds it.
Who owns Oceanhawk Acquisition?
Holders that filed a Schedule 13D or 13G with the SEC for owning more than 5% of the shares: Highbridge Capital Management (13G filed Aug 14, 2026), Goldman Sachs Group (13G filed Aug 11, 2026), Adage Capital Management (13G filed Aug 12, 2026), CSS (13G filed Oct 6, 2026) and Magnetar Financial (13G filed Aug 13, 2026). As of Jun 30, 2026, the largest holders reported on Form 13F were Highbridge Capital Management (1.5 million shares), Adage Capital Partners Gp, L.l.c (1.1 million shares) and CSS (1.0 million shares).
Which institutions hold the most Oceanhawk Acquisition shares?
Per Form 13F filings as of Jun 30, 2026:
- 1. Highbridge Capital Management: 1.5 million shares
- 2. Adage Capital Partners Gp, L.l.c: 1.1 million shares
- 3. CSS: 1.0 million shares
- 4. Polar Asset Management Partners: 950,000 shares
- 5. Sona Asset Management (us): 850,000 shares
- 6. Aristeia Capital, L.l.c: 750,000 shares
- 7. Wolverine Asset Management: 675,705 shares
- 8. Karpus Management: 672,300 shares
- 9. Hudson Bay Capital Management: 625,000 shares
- 10. Toronto Dominion Bank: 578,804 shares
Sources:13G by Highbridge Capital Management (Aug 14, 2026) ↗13G by Goldman Sachs Group (Aug 11, 2026) ↗13G by Adage Capital Management (Aug 12, 2026) ↗13G by CSS (Oct 6, 2026) ↗13G by Magnetar Financial (Aug 13, 2026) ↗All of the company's proxy statements on EDGAR ↗
We hold 13D and 13G filings made since Dec 23, 2024: a holder above 5% that has not filed since then does not appear here.
Quarter flow (concentrated managers)
Concentrated managers holding it
None in the latest quarter.
Largest holders of OHAC (all 13F filers)
- Highbridge Capital Management1.5 MType not verified+1.5 M
- Adage Capital Partners Gp, L.l.c1.1 MInvestment firm+1.1 M
- CSS1.0 MType not verified+1.0 M
- Polar Asset Management Partners950 KType not verified+950 K
- Sona Asset Management (us)850 KType not verified+850 K
- Aristeia Capital, L.l.c750 KInvestment firm+750 K
- Wolverine Asset Management676 KType not verified+676 K
- Karpus Management672 KType not verified+672 K
- Hudson Bay Capital Management625 KInvestment firm+625 K
- Toronto Dominion Bank579 KBank or trading desk+579 K
- Shares
- 1.5 M
- Change
- +1.5 M
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- Type
- Type not verified
- Value
- $14.9M
- Shares
- 1.1 M
- Change
- +1.1 M
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- Type
- Investment firm
- Value
- $10.6M
- Shares
- 1.0 M
- Change
- +1.0 M
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- Type
- Type not verified
- Value
- $10.3M
- Shares
- 950 K
- Change
- +950 K
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- Type
- Type not verified
- Value
- $9.4M
- Shares
- 850 K
- Change
- +850 K
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- Type
- Type not verified
- Value
- $8.4M
- Shares
- 750 K
- Change
- +750 K
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- Type
- Investment firm
- Value
- $7.4M
- Shares
- 676 K
- Change
- +676 K
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- Type
- Type not verified
- Value
- $6.7M
- Shares
- 672 K
- Change
- +672 K
See more
- Type
- Type not verified
- Value
- $6.7M
- Shares
- 625 K
- Change
- +625 K
See more
- Type
- Investment firm
- Value
- $6.2M
- Shares
- 579 K
- Change
- +579 K
See more
- Type
- Bank or trading desk
- Value
- $5.7M
The 10 13F filers with the most shares as of Jun 30, 2026, whatever their type (index firms usually come first). “Change”: shares added or cut versus the previous quarter, split-adjusted; “no data” = there is no comparable portfolio for the previous quarter (no filing, or a filing with its holdings under confidential treatment). “% of the company” only where shares outstanding are up to date. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. With a free account: the top 25, the largest buyers and the largest sellers.
Fundamentals
Balance sheet only, for now. OHAC has not yet filed its first annual report (10-K) with the SEC, so there are no 12-month figures (revenue, margins, earnings and cash flow). We show the balance sheet from its latest filing; once the 12-month figures are available, this section fills in automatically.
- Cash and equivalents
- $224K
- Shareholders' equity
- $-6.6M
Balance sheet figures the company filed with the SEC (10-Q or 10-K), in dollars. Net debt = total debt − cash − investments; when negative, the company has more cash than debt (net cash). How each figure is calculated
Insiders (Form 4)
Open-market purchases, excluding 10b5-1 plans. Officers and directors only; joint filers of the same purchase count as one. 10% owners with no role are shown separately. 0 = nobody bought; “no data” = we do not have its Form 4 filings.
Each of the company's Form 4 filings, on EDGAR ↗Latest trades, with date and filing →
Above 5% (13D/13G)
Disclosed stakes, with their amendments. A filing is not always a purchase: there are also reductions and changes of filing entity.
This list may be incomplete: we hold 13D and 13G filings made since Dec 23, 2024. A holder above 5% that has not filed anything since then is not shown here.
- CSS5.49%13Gfiling ↗Event: Jun 9, 2026 · filed: Oct 6, 2026
- Polar Asset Management Partners5%13Gfiling ↗Event: Jun 30, 2026 · filed: Aug 14, 2026
- Highbridge Capital Management7.9%13Gfiling ↗Event: Jun 30, 2026 · filed: Aug 14, 2026
Above 5% over time (13D/13G)
Each holder with its filings in order. History since December 2024.
Flagged material events (8-K)
Change in directors or officers (Item 5.02)
«Nominating and Corporate Governance Committee Charter»
Unregistered sale of equity securities (Item 3.02)
«Oceanhawk Acquisition Corp. Announces Pricing of Upsized $160,000,000 Initial Public Offering»
Change in directors or officers (Item 5.02)
«Oceanhawk Acquisition Corp. Announces Pricing of Upsized $160,000,000 Initial Public Offering»
Alert items the company itself flagged in its 8-K filings with the SEC, most serious first. It is the form's label, with no interpretation from us: Item 5.02 covers routine appointments as well as a chief executive's departure; open the filing. The quoted headline is the original press release's.
All material events (8-K)
Earnings, agreements, financing, management changes and announcements from the last year, with a filter by type and a link to each filing.