IB Acquisition Corp. Common Stock
IB Acquisition Corp. Common Stock (IBAC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · IBAC · as of Sep 30, 2025
Ownership Breakdown
31
Institutional Holders
▼ 6 vs Q2
$87.41M
Total Inst. Value
▼ $30.01M vs Q2
5.01M
Shares Outstanding
freeFloat 75.53%
8.28M
13F Shares Held
▼ 2.96M 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
IBAC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
KARPUS MANAGEMENT, INC. blank checks | 2.57M | 16.34% | 16.34% | $27.25B | Nov 14, 2025 | ▼ 14.2K |
AQR ARBITRAGE LLC blank checks | 918.7K | 5.83% | 5.83% | $9.66B | Nov 14, 2025 | ▼ 205.0K |
MINT TOWER CAPITAL MANAGEMENT B.V. blank checks | 500.0K | 3.17% | 3.17% | $5.26B | Nov 12, 2025 | — held |
CROSSINGBRIDGE ADVISORS, LLC blank checks | 482.2K | 3.06% | 3.06% | $5.08B | Nov 13, 2025 | ▲ 46.8K |
D. E. SHAW & CO., INC. blank checks | 453.9K | 2.88% | 2.88% | $4.77B | Nov 14, 2025 | — held |
MANGROVE PARTNERS blank checks | 450.0K | 2.86% | 2.86% | $4.73B | Nov 14, 2025 | — held |
BERKLEY W R CORP blank checks | 405.3K | 2.57% | 2.57% | $4.28B | Nov 14, 2025 | ▲ 377 |
WESTCHESTER CAPITAL MANAGEMENT, LLC blank checks | 349.0K | 2.22% | 2.22% | $3.70B | Nov 14, 2025 | — held |
RIVERPARK ADVISORS, LLC blank checks | 246.3K | 1.56% | 1.56% | $2.61B | Nov 13, 2025 | ▲ 81.8K |
DLD ASSET MANAGEMENT, LP blank checks | 240.0K | 1.52% | 1.52% | $2.52B | Nov 14, 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
7
Increased
+167.8K shares3
New Positions
first time holders9
Decreased
−1.04M shares10
Sold Out
fully exitedNet shares change (top 50)
870.1K
+167.8K / −1.04M
Net new holders
-9
3 new / 10 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
IBAC insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
11
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 138,005 | $10.80 | $1.49M | 143.8K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 56,145 | $10.80 | $606.4K | 58.5K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 40,144 | $10.80 | $433.6K | 41.8K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 29,888 | $10.80 | $322.8K | 31.1K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 26,410 | $10.80 | $285.2K | 27.5K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 25,087 | $10.80 | $270.9K | 26.1K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 10,377 | $10.80 | $112.1K | 10.8K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 6,262 | $10.80 | $67.6K | 6.5K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 1,623 | $10.80 | $17.5K | 1.7K | Form 4 ↗ |
AQR Capital Management Holdings, LLC 10 percent owner | Mar 23, 2026 | Sale | 1,059 | $10.80 | $11.4K | 1.1K | Form 4 ↗ |
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
IB Acquisition Corp. Common Stock (IBAC) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 24.47%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of IB Acquisition Corp. Common Stock is KARPUS MANAGEMENT, INC., holding approximately 2.57 million shares — equal to 16.34% of outstanding shares — as of September 30, 2025.
A total of 31 institutional investors currently hold IBAC stock, with a combined institutional value of approximately $87,412,022 as of the most recent 13F filing period.
Frequently asked questions
IBAC ownershipIB Acquisition Corp. Common Stock (IBAC) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is KARPUS MANAGEMENT, INC. with a 16.34% stake. Company insiders hold 24.47%. Data sourced from SEC Form 13F as of September 30, 2025.