Skip to main content
OYSE logo

OYSE · Oyster Enterprises II Acquisition Corp · Holdings

Track OYSE — free
$10.42 +0.01 (+0.10%) At close · Oct 20
Market Cap
$353.39M
Shares
33.91M
Volume · Oct 20 6221 Avg daily vol (3M) 84.56K

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.

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
Holders: 72
Total Value: $253,581,042
Total Shares: 47,743,081
Showing 1–100 of 116 holdings by value · page 1 of 2

Institutional Ownership Trend

5 quarters

Holder Concentration

Across 72 13F filers · Δ vs Mar 31, 2026
Top Holder
6.3%
Jun 2025 → Jun 2026 · range 6.1% – 6.4%
+0.1 pts
Top 5
26.6%
Jun 2025 → Jun 2026 · range 26.6% – 28.7%
−0.1 pts
Top 10
46.9%
Jun 2025 → Jun 2026 · range 46.9% – 48.8%
−1.3 pts
HHI
317
Jun 2025 → Jun 2026 · range 317 – 332
Broadly held−7

Who Holds OYSE

Last 5 quarters through Jun 30, 2026

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026: 72 filers, like-for-like change +1.0%; actively managed books +0.8%; index-like books +34.4%.

Holder type Share Filers Change
Registered adviser 65.5% 41 +0.8%
Exempt adviser 5.7% 2 0.0%
Adviser 8.2% 3 -8.0%
Bank 1.9% 3 +15.0%
Insurer 1.0% 1 -32.4%
Benefit plan 0.1% 1 0.0%
Non-US 7.9% 4 +0.4%
Holding company 0.7% 2 0.0%
Broker-dealer 0.0% 0 —
Unknown 8.8% 15 +19.3%
How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

62 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
0
0.000% of filers hold it in their top 10
Mar 31, 2026: 0
Holders above 5%
0
median weight 0.127%
Mar 31, 2026: 0
Crowding
—
the issuer has more than one class of common stock, so its count is the total across classes
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
the issuer has more than one class of common stock, so its count is the total across classes
Top 10 holders
46.9%
of 13F shares, Herfindahl 0.032
Active holders
-0.1%
like-for-like share change of active filers
5% stakes on record
3
1 13D, 2 13G (2 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 3.9 quarters
Under 1 year 6.98% 1 to 3 years 93.0% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$10.03
estimated per share
Mar 31, 2026: $10.02
Quarter-end price
$10.29
implied by 13F values
Estimated gain or loss
+2.6%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

Estimated cost covers 98.5% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies OYSE's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 SPEG Silver Pegasus Acquisition Corp. 5
2 CCAQ Collective Acquisition Corp. 7
3 TVAI Thayer Ventures Acquisition Corp II 5
4 LWAC LightWave Acquisition Corp. 5
5 PACH Pioneer Acquisition I Corp 6
6 CRAQ Cal Redwood Acquisition Corp. 4
7 BLUW Blue Water Acquisition Corp. III 4
8 CTAA Clearthink 1 Acquisition Corp. 4
9 KOYN CSLM Digital Asset Acquisition Corp III, Ltd 5
10 SCII SC II Acquisition Corp. 4

Shareholder Targets

13F filers that own its peers but not OYSE, quarter ended Jun 30, 2026

Found through its holder-overlap peers: SPEG, CCAQ, TVAI, LWAC, PACH, CRAQ, BLUW, CTAA, KOYN, SCII, HAVA, FIGX, LCCC, COPL, OBA, CRAC, RIBB, KCHV, QSEA, LATA. 45 filers in all.

# Filer In peers
1 Wealthspring Capital LLC Registered adviser, Diversified active $33,761,508 7 held
2 Anson Funds Management LP Registered adviser, Diversified active $25,670,050 1 held
3 Crossingbridge Advisors, LLC Adviser, Diversified active $25,219,600 7 held
4 Logan Stone Capital, LLC Registered adviser, Concentrated $18,917,166 6 held
5 Ghisallo Capital Management LLC Registered adviser, Diversified active $17,123,000 6 held
6 Lineage Point Capital LP Unknown, Diversified active $17,105,894 9 held
7 HGC Investment Management Inc. Non-US, Diversified active $16,874,054 3 held
8 Centiva Capital, LP Registered adviser, Diversified active $14,323,016 11 held
9 Jain Global LLC Registered adviser, Systematic-like $14,131,156 6 held
10 ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser, Diversified active $13,648,500 1 held

Fund Ownership of OYSE by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.00% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 0.00% 0
Index ETFs 0.00% 0
Active ETFs 0.01% 2,372
Active funds 1.96% 663,084
Unclassified 0.00% 0
All registered funds 1.96% 665,456
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Quarterly Activity

vs Mar 31, 2026
New
2
Increased
14
Decreased
13
Sold Out
0
Unchanged
43

New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.

Holder count: +2
Institutional value: +0.5%
Shares held: +1.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
No fully closed positions this quarter.
Showing 100 of 116
Export CSV
Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 116 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 2042182 CUSIP G6861F104 Visit website Investor relations