New Positions
1 managers initiated
Top five by reported value
Cayson Acquisition Corp NASDAQ NMS - GLOBAL MARKET:CAPNU
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
1 new4 added22 reduced4 exited
Total Institutional Holders
27
as of 2025-12-31
Top Holder
BERKLEY W R CORP
$8.1M
Largest QoQ Increase
Warberg Asset Management LLC
+8,981 sh
Largest QoQ Decrease
ATW SPAC MANAGEMENT LLC
-306,703 sh
New Positions(1)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Crossingbridge Advisors, LLC | 8,643 | +8,643 | $92.1K | +$92.1K | — |
Added To(4)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| MIZUHO SECURITIES USA LLC | 704,675 | +74 | $7.4M | +$106.5K | 0.0% |
| Warberg Asset Management LLC | 26,207 | +8,981 | $278.8K | +$98.7K | 52.1% |
| Clear Street Group Inc. | 107,793 | +7,601 | $1.1M | +$97.9K | 7.6% |
| MORGAN STANLEY | 45 | +5 | $479 | +$61 | 12.5% |
Reduced(22)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| HEIGHTS CAPITAL MANAGEMENT, INC | 150,000 | -150,000 | $1.6M | -$1.5M | -50.0% |
| TWO SIGMA INVESTMENTS, LP | 66,577 | -83,423 | $708.4K | -$860.6K | -55.6% |
| TORONTO DOMINION BANK | 25,301 | -25,045 | $269.2K | -$257.9K | -49.7% |
| BERKLEY W R CORP | 763,302 | 0 | $8.1M | +$137.4K | 0.0% |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 450,000 | 0 | $4.8M | +$81.0K | 0.0% |
| WOLVERINE ASSET MANAGEMENT LLC | 565,585 | -2,867 | $6.0M | +$71.8K | -0.5% |
| AQR Arbitrage LLC | 349,901 | 0 | $3.7M | +$70.0K | 0.0% |
| Westchester Capital Management, LLC | 325,000 | 0 | $3.5M | +$65.0K | 0.0% |
| Polar Asset Management Partners Inc. | 275,000 | 0 | $2.9M | +$46.8K | 0.0% |
| BOOTHBAY FUND MANAGEMENT, LLC | 306,703 | 0 | $3.3M | +$42.9K | 0.0% |
| Karpus Management, Inc. | 284,189 | -1,352 | $3.0M | +$37.0K | -0.5% |
| WHITEBOX ADVISORS LLC | 125,000 | 0 | $1.3M | +$21.3K | 0.0% |
| GOLDMAN SACHS GROUP INC | 114,486 | 0 | $1.2M | +$20.6K | 0.0% |
| D. E. Shaw & Co., Inc. | 100,000 | 0 | $1.1M | +$20.0K | 0.0% |
| Magnetar Financial LLC | 75,000 | 0 | $799.5K | +$15.0K | 0.0% |
| First Trust Capital Management L.P. | 75,000 | 0 | $798.0K | +$12.8K | 0.0% |
| PNC Financial Services Group, Inc. | 60,281 | 0 | $641.4K | +$10.9K | 0.0% |
| Dakota Wealth Management | 28,500 | 0 | $303.2K | +$5.1K | 0.0% |
| Radcliffe Capital Management, L.P. | 26,875 | -29 | $285.9K | +$3.5K | -0.1% |
| Robinson Capital Management, LLC | 12,250 | 0 | $130.6K | +$2.5K | 0.0% |
| Quarry LP | 14,500 | 0 | $154.3K | +$2.0K | 0.0% |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC | 470 | 0 | $5.0K | +$80 | 0.0% |
Sold Out(4)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| ATW SPAC MANAGEMENT LLC | 0 | -306,703 | $0 | -$3.2M | — |
| Wealthspring Capital LLC | 0 | -59,550 | $0 | -$622.9K | — |
| UBS Group AG | 0 | -1,204 | $0 | -$12.6K | — |
| ADVISOR GROUP HOLDINGS, INC. | 0 | -250 | $0 | -$2.6K | — |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| BERKLEY W R CORP | 763,302 | $8.1M | 0 | 0.0% |
| MIZUHO SECURITIES USA LLC | 704,675 | $7.4M | +74 | 0.0% |
| WOLVERINE ASSET MANAGEMENT LLC | 565,585 | $6.0M | -2,867 | -0.5% |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 450,000 | $4.8M | 0 | 0.0% |
| AQR Arbitrage LLC | 349,901 | $3.7M | 0 | 0.0% |
| Westchester Capital Management, LLC | 325,000 | $3.5M | 0 | 0.0% |
| BOOTHBAY FUND MANAGEMENT, LLC | 306,703 | $3.3M | 0 | 0.0% |
| Karpus Management, Inc. | 284,189 | $3.0M | -1,352 | -0.5% |
| Polar Asset Management Partners Inc. | 275,000 | $2.9M | 0 | 0.0% |
| HEIGHTS CAPITAL MANAGEMENT, INC | 150,000 | $1.6M | -150,000 | -50.0% |
| WHITEBOX ADVISORS LLC | 125,000 | $1.3M | 0 | 0.0% |
| GOLDMAN SACHS GROUP INC | 114,486 | $1.2M | 0 | 0.0% |
| Clear Street Group Inc. | 107,793 | $1.1M | +7,601 | 7.6% |
| D. E. Shaw & Co., Inc. | 100,000 | $1.1M | 0 | 0.0% |
| Magnetar Financial LLC | 75,000 | $799.5K | 0 | 0.0% |
| First Trust Capital Management L.P. | 75,000 | $798.0K | 0 | 0.0% |
| TWO SIGMA INVESTMENTS, LP | 66,577 | $708.4K | -83,423 | -55.6% |
| PNC Financial Services Group, Inc. | 60,281 | $641.4K | 0 | 0.0% |
| Dakota Wealth Management | 28,500 | $303.2K | 0 | 0.0% |
| Radcliffe Capital Management, L.P. | 26,875 | $285.9K | -29 | -0.1% |
New & Closed Positions this quarter
Closed Positions
4 managers exited
Top five by prior-quarter value
- ATW SPAC MANAGEMENT LLC$3.2M
- Wealthspring Capital LLC$622.9K
- UBS Group AG$12.6K
- ADVISOR GROUP HOLDINGS, INC.$2.6K
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for CAPNU against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.