Oyster Enterprises II Acquisition Corp - OYSE

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
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