Oyster Enterprises II Acquisition Corp - OYSE
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GLAZER CAPITAL, LLC | History | Added to | 1,550,000 | 15,764 | 0.33% | 0.4% | 1 | +48,604 | 3.24% | Q1 2026 | May 14, 2026 |
| Westchester Capital Management, LLC | History | No change | 1,295,112 | 13,236 | 0.6% | 0.55% | 2 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Magnetar Financial LLC | History | No change | 1,300,000 | 13,208 | 0.13% | 0.13% | 3 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| D. E. Shaw & Co., Inc. | History | No change | 1,252,350 | 12,799 | 0.01% | 0.01% | 4 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| METEORA CAPITAL, LLC | History | Reduced | 1,188,787 | 12,090 | 0.89% | 1.01% | 5 | -11,196 | -0.93% | Q1 2026 | May 15, 2026 |
| LINDEN ADVISORS LP | History | No change | 1,150,000 | 11,753 | 0.07% | 0.07% | 6 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| AQR Arbitrage LLC | History | Reduced | 1,095,684 | 11,197 | 0.18% | 0.24% | 7 | -43,004 | -3.78% | Q1 2026 | May 15, 2026 |
| LMR Partners LLP | History | No change | 1,100,000 | 11,187 | 0.02% | 0.02% | 8 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| PICTON MAHONEY ASSET MANAGEMENT | History | No change | 1,000,000 | 10,170 | 0.08% | 0.08% | 9 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | History | No change | 900,000 | 9,153 | 0.14% | 0.13% | 10 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | No change | 797,500 | 8,110 | 0.01% | 0.01% | 11 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 769,975 | 7,844 | 0.0% | 0.0% | 12 | +38,989 | 5.33% | Q1 2026 | May 15, 2026 |
| Hudson Bay Capital Management LP | History | No change | 696,530 | 7,118 | 0.02% | 0.02% | 13 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Karpus Management, Inc. | History | Reduced | 658,061 | 6,692 | 0.21% | 0.21% | 14 | -15,050 | -2.24% | Q1 2026 | May 14, 2026 |
| Radcliffe Capital Management, L.P. | History | No change | 623,741 | 6,343 | 0.48% | 0.34% | 15 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MOORE CAPITAL MANAGEMENT, LP | History | No change | 500,000 | 5,085 | 0.1% | 0.07% | 16 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| BERKLEY W R CORP | History | No change | 475,872 | 4,839 | 0.26% | 0.23% | 17 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | History | Reduced | 475,000 | 4,830 | 0.24% | 0.24% | 18 | -22,500 | -4.52% | Q1 2026 | May 15, 2026 |
| ARISTEIA CAPITAL, L.L.C. | History | No change | 454,000 | 4,617 | 0.1% | 0.1% | 19 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MANGROVE PARTNERS IM, LLC | History | No change | 450,000 | 4,576 | 0.37% | 0.37% | 20 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Alberta Investment Management Corp | History | No change | 400,000 | 4,088 | 0.02% | 0.02% | 21 | 0 | 0.0% | Q1 2026 | Apr 28, 2026 |
| DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | History | No change | 400,000 | 4,088 | 0.06% | 0.06% | 22 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Polar Asset Management Partners Inc. | History | Reduced | 399,900 | 4,067 | 0.08% | 0.05% | 23 | -100 | -0.03% | Q1 2026 | May 15, 2026 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | History | Reduced | 350,000 | 3,559 | 0.02% | 0.02% | 24 | -50,000 | -12.5% | Q1 2026 | May 01, 2026 |
| GOLDMAN SACHS GROUP INC | History | No change | 346,312 | 3,522 | 0.0% | 0.0% | 25 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | History | No change | 340,000 | 3,474 | 0.01% | 0.01% | 26 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Bulldog Investors, LLP | History | Reduced | 324,436 | 3,299 | 0.74% | 0.73% | 27 | -2,660 | -0.81% | Q1 2026 | May 08, 2026 |
| Verition Fund Management LLC | History | Reduced | 301,711 | 3,083 | 0.02% | 0.02% | 28 | -120,904 | -28.61% | Q1 2026 | May 15, 2026 |
| TORONTO DOMINION BANK | History | Reduced | 277,000 | 2,827 | 0.0% | 0.0% | 29 | -50,000 | -15.29% | Q1 2026 | May 15, 2026 |
| Clear Street Group Inc. | History | Reduced | 250,167 | 2,551 | 0.01% | 0.01% | 30 | -549 | -0.22% | Q1 2026 | May 15, 2026 |
| Context Capital Management, LLC | History | No change | 250,782 | 2,550 | 0.06% | 0.07% | 31 | 0 | 0.0% | Q1 2026 | May 07, 2026 |
| GABELLI & Co INVESTMENT ADVISERS, INC. | History | No change | 250,700 | 2,549 | 0.38% | 0.38% | 32 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Shaolin Capital Management LLC | History | Added to | 250,000 | 2,542 | 0.09% | 0.06% | 34 | +50,000 | 25.0% | Q1 2026 | May 15, 2026 |
| WHITEBOX ADVISORS LLC | History | No change | 250,000 | 2,542 | 0.03% | 0.04% | 33 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| PERISCOPE CAPITAL INC. | History | Reduced | 244,345 | 2,485 | 0.28% | 0.34% | 35 | -53,655 | -18.01% | Q1 2026 | May 13, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | History | Reduced | 217,108 | 2,208 | 0.02% | 0.02% | 36 | -17,962 | -7.64% | Q1 2026 | May 04, 2026 |
| Schonfeld Strategic Advisors LLC | History | Added to | 207,303 | 2,108 | 0.01% | 0.01% | 37 | +812 | 0.39% | Q1 2026 | May 15, 2026 |
| MMCAP International Inc. SPC | History | No change | 200,000 | 2,034 | 0.18% | 0.2% | 38 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| GABELLI FUNDS LLC | History | No change | 199,300 | 2,026 | 0.01% | 0.01% | 39 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| MYDA Advisors LLC | History | No change | 199,000 | 2,023 | 0.33% | 0.38% | 40 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| SONA ASSET MANAGEMENT (US) LLC | History | New | 173,344 | 1,762 | 0.04% | — | 41 | +173,344 | New | Q1 2026 | May 15, 2026 |
| Mint Tower Capital Management B.V. | History | No change | 150,000 | 1,526 | 0.14% | 0.18% | 42 | 0 | 0.0% | Q1 2026 | May 04, 2026 |
| First Trust Capital Management L.P. | History | No change | 150,000 | 1,525 | 0.08% | 0.09% | 43 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Calamos Advisors LLC | History | No change | 123,093 | 1,269 | 0.0% | 0.0% | 44 | 0 | 0.0% | Q1 2026 | May 04, 2026 |
| JPMORGAN CHASE & CO | History | No change | 100,000 | 1,031 | 0.0% | 0.0% | 45 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| O'Connor Alternative Investments LLC | History | New | 100,000 | 1,022 | 0.09% | — | 46 | +100,000 | New | Q1 2026 | May 15, 2026 |
| DLD Asset Management, LP | History | No change | 100,038 | 1,017 | 0.09% | 0.07% | 47 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| L1 Global Manager Pty Ltd | History | No change | 100,000 | 1,017 | 0.68% | 0.66% | 48 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | History | No change | 100,000 | 1,011 | 0.12% | 0.12% | 49 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Walleye Capital LLC | History | No change | 75,000 | 766 | 0.0% | 0.0% | 50 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| 683 Capital Management, LLC | History | No change | 75,000 | 762 | 0.04% | 0.03% | 51 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Parallax Volatility Advisers, L.P. | History | New | 69,040 | 706 | 0.0% | — | 52 | +69,040 | New | Q1 2026 | May 15, 2026 |
| OMERS ADMINISTRATION Corp | History | Added to | 61,050 | 629 | 0.0% | 0.0% | 53 | +1,200 | 2.01% | Q1 2026 | May 15, 2026 |
| HEIGHTS CAPITAL MANAGEMENT, INC | History | No change | 50,000 | 511 | 0.14% | 0.18% | 54 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| READYSTATE ASSET MANAGEMENT LP | History | No change | 49,470 | 510 | 0.02% | 0.02% | 55 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| DELTEC ASSET MANAGEMENT LLC | History | No change | 50,000 | 508 | 0.09% | 0.08% | 56 | 0 | 0.0% | Q1 2026 | Apr 24, 2026 |
| GRITSTONE ASSET MANAGEMENT LLC | History | No change | 49,429 | 502 | 0.54% | 0.48% | 57 | 0 | 0.0% | Q1 2026 | May 05, 2026 |
| Dakota Wealth Management | History | Reduced | 40,900 | 415 | 0.01% | 0.01% | 58 | -1,600 | -3.76% | Q1 2026 | May 07, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | New | 39,898 | 405 | 0.0% | — | 59 | +39,898 | New | Q1 2026 | May 12, 2026 |
| ABC ARBITRAGE SA | History | No change | 25,000 | 254 | 0.03% | 0.02% | 60 | 0 | 0.0% | Q1 2026 | May 04, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 21,846 | 223 | 0.0% | 0.0% | 61 | -1,622 | -6.91% | Q1 2026 | May 15, 2026 |
| MIZUHO SECURITIES USA LLC | History | No change | 16,690 | 169 | 0.0% | 0.0% | 62 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | No change | 14,458 | 147 | 0.0% | 0.0% | 63 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 13,262 | 136 | 0.0% | 0.0% | 64 | +101 | 0.77% | Q1 2026 | May 15, 2026 |
| Warberg Asset Management LLC | History | No change | 10,000 | 101 | 0.02% | 0.01% | 65 | 0 | 0.0% | Q1 2026 | May 07, 2026 |
| UBS Group AG | History | Added to | 2,241 | 22 | 0.0% | 0.0% | 66 | +10 | 0.45% | Q1 2026 | May 05, 2026 |
| Alyeska Investment Group, L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -25,000 | -100.0% | Q1 2026 | May 15, 2026 |
| Virtu Financial LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -10,979 | -100.0% | Q1 2026 | May 14, 2026 |
| CITIGROUP INC | History | Closed out | 0 | 0 | — | 0.0% | — | -3,900 | -100.0% | Q1 2026 | May 11, 2026 |
| MORGAN STANLEY | History | Reduced | 67 | 0 | — | — | — | -20 | -22.99% | Q1 2026 | May 15, 2026 |