OYSE · Oyster Enterprises II Acquisition Corp · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“Such potential liquidity shortfall and mandatory liquidation condition raise substantial doubt about the Company’s ability to continue as a going concern.”View the 10-Q filed Aug 6, 2026
Every disclosed holder of OYSE in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns OYSE
13F quarter Jun 30, 2026No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 47,743,081 | 140.78% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 10,983,779 | 32.39% |
| Remaining | 24,812,610 | -73.16% |
| Registered funds (N-PORT, not summed) | 463,084 | 1.37% |
Shares outstanding: 33,914,250, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of OYSE
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Oyster Enterprises II LLC
13D
CIK 2046100 · Unknown · May 23, 2025
|
8,361,250 | ||
| 1.1 |
|
455,000 | ||
| 2 |
|
3,015,116 | ||
| 3 |
Magnetar Financial LLC
13F
CIK 1352851 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
2,600,000 | ||
| 4 |
GLAZER CAPITAL, LLC
13F
CIK 1076809 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER, OYSEU
|
2,333,021 | ||
| 5 |
AQR Arbitrage LLC
13F
CIK 1167456 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
2,241,349 | ||
| 6 |
|
2,200,000 | ||
| 7 |
Linden Advisors LP
13F
CIK 1279396 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
2,150,000 | ||
| 8 |
Westchester Capital Management, LLC
13F
CIK 1512805 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
2,145,112 | ||
| 9 |
PICTON MAHONEY ASSET MANAGEMENT
13F
CIK 1539041 · Non-US institution · Jun 30, 2026
Classes OYSE, OYSER
|
1,815,000 | ||
| 10 |
TENOR CAPITAL MANAGEMENT Co., L.P.
13F
CIK 1346554 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
1,800,000 | ||
| 11 |
|
1,483,841 | ||
| 12 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER, OYSEU
|
1,439,986 | ||
| 13 |
D. E. Shaw & Co., Inc.
13F
CIK 1009207 · Unknown · Jun 30, 2026
|
1,252,350 | ||
| 14 |
Hudson Bay Capital Management LP
13F
CIK 1393825 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
1,198,060 | ||
| 15 |
Harraden Circle Investments, LLC
13F
CIK 1910592 · Registered investment adviser · Jun 30, 2026
|
1,178,826 | ||
| 16 |
Radcliffe Capital Management, L.P.
13F
CIK 1218275 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
1,174,821 | ||
| 17 |
AQR CAPITAL MANAGEMENT LLC
13G
CIK 1167557 · Registered investment adviser · Sep 30, 2025
Rule 13d-1(b), qualified institution
|
1,138,688 | ||
| 18 |
MOORE CAPITAL MANAGEMENT, LP
13F
CIK 1448574 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
1,000,000 | ||
| 19 |
RIVERNORTH CAPITAL MANAGEMENT, LLC
13F
CIK 1447578 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
974,872 | ||
| 20 |
ARISTEIA CAPITAL, L.L.C.
13F
CIK 1080171 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
908,000 | ||
| 21 |
Verition Fund Management LLC
13F
CIK 1454027 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
872,877 | ||
| 22 |
Polar Asset Management Partners Inc.
13F
CIK 1326389 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
826,400 | ||
| 23 |
Karpus Management, Inc.
13F
CIK 1048703 · Investment adviser · Jun 30, 2026
|
803,996 | ||
| 24 |
Alberta Investment Management Corp
13F
CIK 1463559 · Non-US institution · Jun 30, 2026
Classes OYSE, OYSER
|
800,000 | ||
| 25 |
Davidson Kempner Capital Management LP
13F
CIK 1595082 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
800,000 | ||
| 26 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
|
797,500 | ||
| 27 |
|
793,549 | ||
| 28 |
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F
CIK 1535845 · Non-US institution · Jun 30, 2026
Classes OYSE, OYSER
|
790,000 | ||
| 29 |
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS
13F
CIK 1083190 · Unknown · Jun 30, 2026
Classes OYSE, OYSER
|
750,000 | ||
| 30 |
Shaolin Capital Management LLC
13F
CIK 1766806 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
650,393 | ||
| 31 |
Bulldog Investors, LLP
13F
CIK 1504304 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
628,625 | ||
| 32 |
SONA ASSET MANAGEMENT (US) LLC
13F
CIK 1856405 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
623,344 | ||
| 33 |
MYDA Advisors LLC
13F
CIK 1589689 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
548,000 | ||
| 34 |
Periscope Capital Inc.
13F
CIK 1695320 · Exempt reporting adviser · Jun 30, 2026
Classes OYSE, OYSER
|
544,345 | ||
| 35 |
Context Capital Management, LLC
13F
CIK 1301396 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
501,564 | ||
| 36 |
GABELLI & Co INVESTMENT ADVISERS, INC.
13F
CIK 932724 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
501,400 | ||
| 37 |
WHITEBOX ADVISORS LLC
13F
CIK 1257391 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
500,000 | ||
| 38 |
|
491,554 | ||
| 39 |
Schonfeld Strategic Advisors LLC
13F
CIK 1665241 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
485,091 | ||
| 40 |
BERKLEY W R CORP
13F
CIK 11544 · Insurance company · Jun 30, 2026
|
475,872 | ||
| 41 |
MANGROVE PARTNERS IM, LLC
13F
CIK 1535392 · Registered investment adviser · Jun 30, 2026
|
450,000 | ||
| 42 |
|
400,000 | ||
| 43 |
|
386,210 | ||
| 44 |
GABELLI FUNDS LLC
13F
CIK 1081407 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
373,600 | ||
| 45 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
|
346,312 | ||
| 46 |
Decagon Asset Management LLP
13F
CIK 1950677 · Unknown · Jun 30, 2026
|
307,542 | ||
| 47 |
|
300,000 | ||
| 48 |
Calamos Advisors LLC
13F
CIK 1316507 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
246,186 | ||
| 49 |
Alpine Global Management, LLC
13F
CIK 1581655 · Unknown · Jun 30, 2026
|
245,295 | ||
| 50 |
Parallax Volatility Advisers, L.P.
13F
CIK 1521001 · Registered investment adviser · Jun 30, 2026
Classes OYSE, OYSER
|
234,143 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
Showing 1–50 of 79 holders
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