Dune Acquisition Corporation II
Dune Acquisition Corporation II (IPOD) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · IPOD · as of Sep 30, 2025
Ownership Breakdown
37
Institutional Holders
▲ 7 vs Q2
$127.44M
Total Inst. Value
▲ $29.72M vs Q2
14.48M
Shares Outstanding
freeFloat 79.16%
12.60M
13F Shares Held
▲ 2.87M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
IPOD largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
ARISTEIA CAPITAL LLC blank checks | 1.10M | 7.88% | 7.88% | $11.12B | Nov 14, 2025 | — held |
TENOR CAPITAL MANAGEMENT CO., L.P. blank checks | 1.00M | 7.16% | 7.16% | $10.11B | Nov 14, 2025 | NEW |
MAGNETAR FINANCIAL LLC blank checks | 850.0K | 6.09% | 6.09% | $8.60B | Nov 13, 2025 | — held |
FIRST TRUST CAPITAL MANAGEMENT L.P. blank checks | 700.0K | 5.01% | 5.01% | $7.08B | Nov 17, 2025 | — held |
WOLVERINE ASSET MANAGEMENT LLC blank checks | 665.1K | 4.76% | 4.76% | $6.73B | Oct 28, 2025 | ▲ 127.2K |
D. E. SHAW & CO., INC. blank checks | 598.0K | 4.28% | 4.28% | $6.05B | Nov 14, 2025 | NEW |
AQR ARBITRAGE LLC blank checks | 565.9K | 4.05% | 4.05% | $5.73B | Nov 14, 2025 | ▼ 214.1K |
POLAR ASSET MANAGEMENT PARTNERS INC. blank checks | 550.0K | 3.94% | 3.94% | $5.56B | Dec 1, 2025 | — held |
BERKLEY W R CORP blank checks | 500.1K | 3.58% | 3.58% | $5.06B | Nov 14, 2025 | — held |
GLAZER CAPITAL, LLC blank checks | 498.5K | 3.57% | 3.57% | $5.04B | Nov 13, 2025 | ▼ 1.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
6
Increased
+572.7K shares11
New Positions
first time holders6
Decreased
−488.2K shares3
Sold Out
fully exitedNet shares change (top 50)
+84.5K
+572.7K / −488.2K
Net new holders
+8
11 new / 3 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
IPOD insider trading · insider activity
Source: SEC Form 4
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Dune Acquisition Corporation II (IPOD) is primarily owned by institutional investors, who hold approximately 87.0% of total shares outstanding. Company insiders own approximately 20.84%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Dune Acquisition Corporation II is ARISTEIA CAPITAL LLC, holding approximately 1.10 million shares — equal to 7.88% of outstanding shares — as of September 30, 2025.
A total of 37 institutional investors currently hold IPOD stock, with a combined institutional value of approximately $127,437,432 as of the most recent 13F filing period.
Frequently asked questions
IPOD ownershipDune Acquisition Corporation II (IPOD) is primarily owned by institutional investors, who hold approximately 87.0% of shares. The largest shareholder is ARISTEIA CAPITAL LLC with a 7.88% stake. Company insiders hold 20.84%. Data sourced from SEC Form 13F as of September 30, 2025.