Ribbon Acquisition Corp
Ribbon Acquisition Corp (RIBB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · RIBB · as of Sep 30, 2025
Ownership Breakdown
25
Institutional Holders
▲ 3 vs Q2
$47.87M
Total Inst. Value
▲ $7.64M vs Q2
5.75M
Shares Outstanding
freeFloat 93.24%
4.68M
13F Shares Held
▲ 712,581 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
RIBB largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
MIZUHO SECURITIES USA LLC blank checks | 582.0K | 9.00% | 9.00% | $5.86B | Oct 22, 2025 | — held |
BERKLEY W R CORP blank checks | 462.6K | 7.15% | 7.15% | $4.74B | Nov 14, 2025 | ▲ 24.9K |
WOLVERINE ASSET MANAGEMENT LLC blank checks | 444.2K | 6.87% | 6.87% | $4.55B | Oct 28, 2025 | ▼ 1.9K |
POLAR ASSET MANAGEMENT PARTNERS INC. blank checks | 400.0K | 6.18% | 6.18% | $4.10B | Dec 1, 2025 | — held |
RIVERNORTH CAPITAL MANAGEMENT, LLC blank checks | 300.0K | 4.64% | 4.64% | $3.07B | Nov 14, 2025 | NEW |
HGC INVESTMENT MANAGEMENT INC. blank checks | 250.0K | 3.86% | 3.86% | $2.56B | Nov 14, 2025 | NEW |
HUDSON BAY CAPITAL MANAGEMENT LP blank checks | 250.0K | 3.86% | 3.86% | $2.56B | Dec 15, 2025 | — held |
KARPUS MANAGEMENT, INC. blank checks | 225.3K | 3.48% | 3.48% | $2.31B | Nov 14, 2025 | ▼ 225 |
MANGROVE PARTNERS blank checks | 203.0K | 3.14% | 3.14% | $2.08B | Nov 14, 2025 | NEW |
HEIGHTS CAPITAL MANAGEMENT, INC blank checks | 200.0K | 3.09% | 3.09% | $2.05B | Nov 18, 2025 | — held |
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
2
Increased
+24.9K shares4
New Positions
first time holders7
Decreased
−58.0K shares0
Sold Out
fully exitedNet shares change (top 50)
33.1K
+24.9K / −58.0K
Net new holders
-1
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
RIBB insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
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
Ribbon Acquisition Corp (RIBB) is primarily owned by institutional investors, who hold approximately 81.5% of total shares outstanding. Company insiders own approximately 6.76%, while retail and public investors account for the remaining 11.75%.
The largest institutional shareholder of Ribbon Acquisition Corp is MIZUHO SECURITIES USA LLC, holding approximately 582,000 shares — equal to 9.00% of outstanding shares — as of September 30, 2025.
A total of 25 institutional investors currently hold RIBB stock, with a combined institutional value of approximately $47,872,412 as of the most recent 13F filing period.
Frequently asked questions
RIBB ownershipRibbon Acquisition Corp (RIBB) is primarily owned by institutional investors, who hold approximately 81.5% of shares. The largest shareholder is MIZUHO SECURITIES USA LLC with a 9.00% stake. Company insiders hold 6.76%. Data sourced from SEC Form 13F as of September 30, 2025.