Atlas Crest Investment Corp. II
Atlas Crest Investment Corp. II (ACII) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ACII · as of Sep 30, 2025
Ownership Breakdown
4
Institutional Holders
▲ 4 vs Q2
$1.24M
Total Inst. Value
▲ $1.24M vs Q2
—
Shares Outstanding
123,237
13F Shares Held
▲ 123,237 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
ACII largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 4 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
JANE STREET GROUP, LLC blank checks | 63.8K | 18.49% | 18.49% | $1.60B | Nov 14, 2025 | NEW |
OLD MISSION CAPITAL LLC blank checks | 45.4K | 13.17% | 13.17% | $1.14B | Nov 14, 2025 | NEW |
MILLINGTON FINANCIAL ADVISORS, LLC blank checks | 14.0K | 4.05% | 4.05% | $348.16M | Oct 30, 2025 | NEW |
ALLWORTH FINANCIAL LP blank checks | 27 | 0.01% | 0.01% | $679,000 | Dec 2, 2025 | NEW |
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
0
Increased
+0 shares4
New Positions
first time holders0
Decreased
−0 shares0
Sold Out
fully exitedNet shares change (top 50)
+0
+0 / −0
Net new holders
+4
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ACII 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
Atlas Crest Investment Corp. II (ACII) is primarily owned by institutional investors, who hold approximately — of total shares outstanding. Company insiders own approximately —, while retail and public investors account for the remaining —.
The largest institutional shareholder of Atlas Crest Investment Corp. II is JANE STREET GROUP, LLC, holding approximately 63,803 shares — equal to 18.49% of outstanding shares — as of September 30, 2025.
A total of 4 institutional investors currently hold ACII stock, with a combined institutional value of approximately $1,240,997 as of the most recent 13F filing period.
Frequently asked questions
ACII ownershipAtlas Crest Investment Corp. II (ACII) is primarily owned by institutional investors, who hold approximately — of shares. The largest shareholder is JANE STREET GROUP, LLC with a 18.49% stake. Company insiders hold —. Data sourced from SEC Form 13F as of September 30, 2025.