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Equibles

OYSE

Oyster Enterprises II Acquisition Corp

Company with tickers: OYSE, OYSER, OYSEU

CIK
2042182
CUSIP
G6861F104
Shares Outstanding
26,008,000
13F Activity (30d)
52 filings 50 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 60
Total Value: $249,670,719
Total Shares: 24,549,728

Institutional Ownership Trend

3 quarters

Holder Concentration

Across 60 13F filers · Δ vs Dec 31, 2025
Top Holder
6.3%
Sep 2025 → Mar 2026 · range 6.1% – 6.8%
+0.2 pts
Top 5
26.8%
Sep 2025 → Mar 2026 · range 26.7% – 29.7%
+0.2 pts
Top 10
48.2%
Sep 2025 → Mar 2026 · range 48.2% – 52.0%
−0.0 pts
HHI
325
Sep 2025 → Mar 2026 · range 325 – 364
Broadly held −1

Quarterly Activity

vs Dec 31, 2025
New
4
Increased
4
Decreased
15
Sold Out
4
Unchanged
37
Holder count: 0
Institutional value: +0.6%
Shares held: -0.0%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Small Shaolin Capital Management LLC +50,000 250,000
Mid GLAZER CAPITAL, LLC +48,604 1,550,000
Mega MILLENNIUM MANAGEMENT LLC +38,989 668,989
Large Schonfeld Strategic Advisors LLC +812 207,303

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large Verition Fund Management LLC −120,904 301,711
Small Periscope Capital Inc. −53,655 244,345
Large TORONTO DOMINION BANK −50,000 277,000
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS −50,000 350,000
Mid AQR Arbitrage LLC −43,004 1,095,684

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mid SONA ASSET MANAGEMENT (US) LLC 173,344 $1,762,908
Mid O'Connor Alternative Investments LLC 100,000 $1,017,000
Large Parallax Volatility Advisers, L.P. 69,040 $702,136
Mega BNP PARIBAS ARBITRAGE, SA 39,898 $405,762

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mid OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 100,000 $1,011,000
Large Alyeska Investment Group, L.P. 25,000 $252,750
Mid Virtu Financial LLC 10,979 $110,997
Mega CITIGROUP INC 3,900 $39,429
Filter: New 4 Increased 4 Reduced 15 Sold out 4 Unchanged 37
Showing 60 of 60
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid GLAZER CAPITAL, LLC $15,763,500 6.31% 1,550,000
Mid Magnetar Financial LLC $13,221,000 5.30% 1,300,000
Mid Westchester Capital Management, LLC $13,171,287 5.28% 1,295,112
Mega D. E. Shaw & Co., Inc. $12,736,399 5.10% 1,252,350
Mid METEORA CAPITAL, LLC $12,089,963 4.84% 1,188,787
Mid Linden Advisors LP $11,695,500 4.68% 1,150,000
Large LMR Partners LLP $11,187,000 4.48% 1,100,000
Mid AQR Arbitrage LLC $11,143,106 4.46% 1,095,684
Mid PICTON MAHONEY ASSET MANAGEMENT $10,170,000 4.07% 1,000,000
Mid TENOR CAPITAL MANAGEMENT Co., L.P. $9,153,000 3.67% 900,000
Mega TWO SIGMA INVESTMENTS, LP $8,110,575 3.25% 797,500
Large Hudson Bay Capital Management LP $7,083,710 2.84% 696,530
Mega MILLENNIUM MANAGEMENT LLC $6,803,618 2.73% 668,989
Mid Karpus Management, Inc. $6,692,480 2.68% 658,061
Small Radcliffe Capital Management, L.P. $6,343,445 2.54% 623,741
Mid MOORE CAPITAL MANAGEMENT, LP $5,085,000 2.04% 500,000
Mid BERKLEY W R CORP $4,839,618 1.94% 475,872
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC $4,830,750 1.93% 475,000
Mid ARISTEIA CAPITAL, L.L.C. $4,617,180 1.85% 454,000
Mid MANGROVE PARTNERS IM, LLC $4,576,500 1.83% 450,000
Mid Davidson Kempner Capital Management LP $4,068,000 1.63% 400,000
Mid Alberta Investment Management Corp $4,068,000 1.63% 400,000
Mid Polar Asset Management Partners Inc. $4,066,983 1.63% 399,900
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $3,559,500 1.43% 350,000
Mega GOLDMAN SACHS GROUP INC $3,521,993 1.41% 346,312
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $3,457,800 1.38% 340,000
Small Bulldog Investors, LLP $3,299,514 1.32% 324,436
Large Verition Fund Management LLC $3,068,400 1.23% 301,711
Large TORONTO DOMINION BANK Bank $2,817,090 1.13% 277,000
Small Context Capital Management, LLC $2,550,452 1.02% 250,782
Small GABELLI & Co INVESTMENT ADVISERS, INC. $2,549,619 1.02% 250,700
Mid WHITEBOX ADVISORS LLC $2,542,500 1.02% 250,000
Small Shaolin Capital Management LLC $2,542,500 1.02% 250,000
Small Periscope Capital Inc. $2,484,988 1.00% 244,345
Mid WOLVERINE ASSET MANAGEMENT LLC $2,207,988 0.88% 217,108
Large Schonfeld Strategic Advisors LLC $2,108,271 0.84% 207,303
Small MMCAP International Inc. SPC $2,034,000 0.81% 200,000
Large Clear Street Group Inc. $2,028,864 0.81% 199,495
Large GABELLI FUNDS LLC $2,026,881 0.81% 199,300
Small MYDA Advisors LLC $2,023,830 0.81% 199,000
Mid SONA ASSET MANAGEMENT (US) LLC $1,762,908 0.71% 173,344
Mid First Trust Capital Management L.P. $1,525,500 0.61% 150,000
Small Mint Tower Capital Management B.V. $1,525,500 0.61% 150,000
Small DLD Asset Management, LP $1,017,386 0.41% 100,038
Mid O'Connor Alternative Investments LLC $1,017,000 0.41% 100,000
Micro L1 Global Manager Pty Ltd $1,017,000 0.41% 100,000
Large Walleye Capital LLC $762,750 0.31% 75,000
Mid 683 Capital Management, LLC $762,750 0.31% 75,000
Large Parallax Volatility Advisers, L.P. $702,136 0.28% 69,040
Small HEIGHTS CAPITAL MANAGEMENT, INC $508,500 0.20% 50,000
Small DELTEC ASSET MANAGEMENT LLC $508,500 0.20% 50,000
Micro GRITSTONE ASSET MANAGEMENT LLC $502,692 0.20% 49,429
Mid Dakota Wealth Management $415,953 0.17% 40,900
Mega BNP PARIBAS ARBITRAGE, SA $405,762 0.16% 39,898
Small ABC ARBITRAGE SA $254,250 0.10% 25,000
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $222,173 0.09% 21,846
Mid MIZUHO SECURITIES USA LLC Broker-Dealer $169,737 0.07% 16,690
Mega GEODE CAPITAL MANAGEMENT, LLC $147,037 0.06% 14,458
Micro Warberg Asset Management LLC $101,700 0.04% 10,000
Mega MORGAN STANLEY $681 0.00% 67

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