OYSE · Company research
Oyster Enterprises II Acquisition Corp Class A Ordinary Shares (OYSE): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
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Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
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Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 1083190 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 350000 | 3601500 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
| TWO SIGMA INVESTMENTS, LP | 1179392 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 797500 | 8206275 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Alpine Global Management, LLC | 1581655 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 245295 | 26982 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Periscope Capital Inc. | 1695320 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 244345 | 2514310 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| First Trust Capital Management L.P. | 1604488 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 150000 | 1543500 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Westchester Capital Management, LLC | 1512805 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1202048 | 12393115 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MYDA Advisors LLC | 1589689 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 199000 | 2047710 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Alberta Investment Management Corp | 1463559 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 400000 | 4124000 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20834 | 214799 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Harraden Circle Investments, LLC | 1910592 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1178826 | 129789 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| CSS LLC/IL | 1103646 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 66340 | 73040 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Warberg Asset Management LLC | 1597506 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10000 | 102900 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| WOLVERINE ASSET MANAGEMENT LLC | 1279891 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 214698 | 2209242 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Verition Fund Management LLC | 1454027 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 292103 | 3011582 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| AQR Arbitrage LLC | 1167456 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1100584 | 11347021 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| DELTEC ASSET MANAGEMENT LLC | 1269950 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 50000 | 514500 | — | — | — | Jul 21, 2026 | SEC_13F_DATASET |
| GRITSTONE ASSET MANAGEMENT LLC | 1964236 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 49429 | 508624 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| MIZUHO SECURITIES USA LLC | 812291 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16690 | 169404 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| GLAZER CAPITAL, LLC | 1076809 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1562348 | 16077 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| TORONTO DOMINION BANK | 947263 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 202000 | 2082620 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Davidson Kempner Capital Management LP | 1595082 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 400000 | 4116000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| LMR Partners LLP | 1578621 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1100000 | 11319000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| WHITEBOX ADVISORS LLC | 1257391 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 250000 | 2572500 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ARISTEIA CAPITAL, L.L.C. | 1080171 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 454000 | 4671660 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Radcliffe Capital Management, L.P. | 1218275 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 623742 | 6418305 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HEIGHTS CAPITAL MANAGEMENT, INC | 1081698 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 50000 | 515500 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BERKLEY W R CORP | 11544 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 475872 | 4906240 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| DLD Asset Management, LP | 1578299 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100038 | 1029391 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| SONA ASSET MANAGEMENT (US) LLC | 1856405 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 169473 | 1743877 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| GABELLI FUNDS LLC | 1081407 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 199300 | 21943 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 932724 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 250700 | 27602 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Decagon Asset Management LLP | 1950677 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 307542 | 33860 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| 683 Capital Management, LLC | 1404574 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 75000 | 771750 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Bulldog Investors, LLP | 1504304 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 320436 | 3297286 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Mint Tower Capital Management B.V. | 1666606 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 150000 | 1544 | — | — | — | Aug 18, 2026 | SEC_13F_DATASET |
| PICTON MAHONEY ASSET MANAGEMENT | 1539041 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1015000 | 10444353 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Context Capital Management, LLC | 1301396 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 250782 | 2580547 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
| Polar Asset Management Partners Inc. | 1326389 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 399800 | 4113942 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| O'Connor Alternative Investments LLC | 2081629 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100000 | 1031000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Dakota Wealth Management | 1631353 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 40900 | 420861 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Limestone Investment Advisors LP | 2075597 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 50094 | 515467 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Calamos Advisors LLC | 1316507 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 123093 | 1269089 | — | — | — | Jul 31, 2026 | SEC_13F_DATASET |
| OMERS ADMINISTRATION Corp | 1053321 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 61050 | 670940 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| MANGROVE PARTNERS IM, LLC | 1535392 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 450000 | 4630500 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Magnetar Financial LLC | 1352851 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1300000 | 13403000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Linden Advisors LP | 1279396 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1000000 | 135100 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| L1 Global Manager Pty Ltd | 1878742 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100000 | 1029000 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| CITADEL ADVISORS LLC | 1423053 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13259 | 136568 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Walleye Capital LLC | 1758720 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 75000 | 8258 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| Hudson Bay Capital Management LP | 1393825 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 696530 | 7181224 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MMCAP International Inc. SPC | 1304857 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 200000 | 2058000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1535845 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 340000 | 3505400 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| MOORE CAPITAL MANAGEMENT, LP | 1448574 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 500000 | 5145000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Shaolin Capital Management LLC | 1766806 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 210002 | 2160921 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 919185 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 47911 | 492046 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MORGAN STANLEY | 895421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 43 | 442 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| UBS Group AG | 1610520 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2241 | 23150 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| ABC ARBITRAGE SA | 2049221 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 25000 | 257250 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| BNP PARIBAS FINANCIAL MARKETS | 1166588 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 39898 | 411348 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Parallax Volatility Advisers, L.P. | 1521001 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 90616 | 934251 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MILLENNIUM MANAGEMENT LLC | 1273087 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 669000 | 6884010 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Schonfeld Strategic Advisors LLC | 1665241 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 235091 | 2419086 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1346554 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 900000 | 9261000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| D. E. Shaw & Co., Inc. | 1009207 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1252350 | 12911729 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| JPMORGAN CHASE & CO | 19617 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100000 | 1030000 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| GOLDMAN SACHS GROUP INC | 886982 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 346312 | 3563550 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Clear Street Group Inc. | 1881567 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 178908 | 1840963 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Meteora Capital, LLC | 1905106 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2133322 | 234879 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 1447578 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 475000 | 4906750 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| READYSTATE ASSET MANAGEMENT LP | 1900923 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 49470 | 509541 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Dakota Wealth Management | 1631353 | Tue Mar 31 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 40900 | 415958 | — | — | — | Aug 26, 2026 | SEC_13F_DATASET |
| Dakota Wealth Management | 1631353 | Wed Dec 31 2025 00:00:00 GMT+0000 (Coordinated Universal Time) | 42500 | 428400 | — | — | — | Aug 26, 2026 | SEC_13F_DATASET |
| Dakota Wealth Management | 1631353 | Tue Sep 30 2025 00:00:00 GMT+0000 (Coordinated Universal Time) | 25700 | 257514 | — | — | — | Aug 26, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.