Blue Water Acquisition Corp III
Blue Water Acquisition Corp III (BLUW) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · BLUW · as of Sep 30, 2025
Ownership Breakdown
55
Institutional Holders
▲ 55 vs Q2
$211.22M
Total Inst. Value
▲ $211.22M vs Q2
32.31M
Shares Outstanding
freeFloat 80.42%
21.22M
13F Shares Held
▲ 21.22M 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
BLUW largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
MAGNETAR FINANCIAL LLC blank checks | 1.50M | 5.93% | 5.93% | $14.98B | Nov 13, 2025 | NEW |
D. E. SHAW & CO., INC. blank checks | 1.25M | 4.95% | 4.95% | $12.49B | Nov 14, 2025 | NEW |
AQR ARBITRAGE LLC blank checks | 1.15M | 4.56% | 4.56% | $11.48B | Nov 14, 2025 | NEW |
GLAZER CAPITAL, LLC blank checks | 1.08M | 4.26% | 4.26% | $10.74B | Nov 13, 2025 | NEW |
TENOR CAPITAL MANAGEMENT CO., L.P. blank checks | 1.00M | 3.95% | 3.95% | $9.97B | Nov 14, 2025 | NEW |
BERKLEY W R CORP blank checks | 929.9K | 3.68% | 3.68% | $9.26B | Nov 14, 2025 | NEW |
LINDEN ADVISORS LP blank checks | 900.0K | 3.56% | 3.56% | $8.97B | Nov 14, 2025 | NEW |
TWO SIGMA INVESTMENTS, LP blank checks | 797.5K | 3.15% | 3.15% | $7.94B | Nov 14, 2025 | NEW |
MILLENNIUM MANAGEMENT LLC blank checks | 772.8K | 3.05% | 3.05% | $7.70B | Nov 14, 2025 | NEW |
HUDSON BAY CAPITAL MANAGEMENT LP blank checks | 650.0K | 2.57% | 2.57% | $6.48B | Dec 15, 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 shares50
New Positions
first time holders0
Decreased
−0 shares0
Sold Out
fully exitedNet shares change (top 50)
+0
+0 / −0
Net new holders
+50
50 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
BLUW 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.
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Hernandez Joseph Chief Executive Officer | Nov 25, 2025 | Sale | 430,000 | — | — | 430.0K | Form 4 ↗ |
Hernandez Joseph Chief Executive Officer | Nov 25, 2025 | J-Other | 215,000 | — | — | 0 | Form 4 ↗ |
Hernandez Joseph Chief Executive Officer | Nov 25, 2025 | J-Other | 6,325,000 | — | — | 0 | Form 4 ↗ |
Blue Water Acquisition III LLC 10 percent owner | Nov 25, 2025 | Sale | 430,000 | — | — | 430.0K | Form 4 ↗ |
Blue Water Acquisition III LLC 10 percent owner | Nov 25, 2025 | J-Other | 6,325,000 | — | — | 0 | Form 4 ↗ |
Blue Water Acquisition III LLC 10 percent owner | Nov 25, 2025 | J-Other | 215,000 | — | — | 0 | 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
Blue Water Acquisition Corp III (BLUW) is primarily owned by institutional investors, who hold approximately 65.7% of total shares outstanding. Company insiders own approximately 19.58%, while retail and public investors account for the remaining 14.75%.
The largest institutional shareholder of Blue Water Acquisition Corp III is MAGNETAR FINANCIAL LLC, holding approximately 1.50 million shares — equal to 5.93% of outstanding shares — as of September 30, 2025.
A total of 55 institutional investors currently hold BLUW stock, with a combined institutional value of approximately $211,224,066 as of the most recent 13F filing period.
Frequently asked questions
BLUW ownershipBlue Water Acquisition Corp III (BLUW) is primarily owned by institutional investors, who hold approximately 65.7% of shares. The largest shareholder is MAGNETAR FINANCIAL LLC with a 5.93% stake. Company insiders hold 19.58%. Data sourced from SEC Form 13F as of September 30, 2025.