New Positions
1 managers initiated
Top five by reported value
SIM Acquisition Corp. I NGM:SIMAW
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 new6 added34 reduced4 exited
Total Institutional Holders
41
as of 2025-12-31
Top Holder
Magnetar Financial LLC
$20.6M
Largest QoQ Increase
MIZUHO SECURITIES USA LLC
+372,984 sh
Largest QoQ Decrease
METEORA CAPITAL, LLC
-255,426 sh
New Positions(1)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| L1 Global Manager Pty Ltd | 200,000 | +200,000 | $2.1M | +$2.1M | — |
Added To(6)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| MIZUHO SECURITIES USA LLC | 648,610 | +372,984 | $6.8M | +$4.0M | 135.3% |
| Radcliffe Capital Management, L.P. | 536,322 | +26,290 | $5.7M | +$303.9K | 5.2% |
| Shaolin Capital Management LLC | 212,952 | +11,602 | $2.3M | +$132.9K | 5.8% |
| WOLVERINE ASSET MANAGEMENT LLC | 732,459 | +8,514 | $7.8M | +$126.4K | 1.2% |
| UBS Group AG | 39,598 | +9,921 | $419.3K | +$106.5K | 33.4% |
| MORGAN STANLEY | 99 | +15 | $1.0K | +$163 | 17.9% |
Reduced(34)
Sold Out(4)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| METEORA CAPITAL, LLC | 0 | -255,426 | $0 | -$2.7M | — |
| BCK Capital Management LP | 0 | -46,370 | $0 | -$488.7K | — |
| CITADEL ADVISORS LLC | 0 | -15,460 | $0 | -$162.3K | — |
| 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 % |
|---|---|---|---|---|
| Magnetar Financial LLC | 1,945,196 | $20.6M | 0 | 0.0% |
| First Trust Capital Management L.P. | 1,800,000 | $19.1M | 0 | 0.0% |
| PICTON MAHONEY ASSET MANAGEMENT | 1,800,000 | $19.1M | 0 | 0.0% |
| Karpus Management, Inc. | 1,735,497 | $18.4M | -33,270 | -1.9% |
| AQR Arbitrage LLC | 1,455,722 | $15.4M | 0 | 0.0% |
| Westchester Capital Management, LLC | 1,270,312 | $13.5M | 0 | 0.0% |
| D. E. Shaw & Co., Inc. | 987,497 | $10.5M | 0 | 0.0% |
| MMCAP International Inc. SPC | 980,000 | $10.4M | 0 | 0.0% |
| LMR Partners LLP | 980,000 | $10.4M | 0 | 0.0% |
| Alberta Investment Management Corp | 750,000 | $7.9M | 0 | 0.0% |
| WOLVERINE ASSET MANAGEMENT LLC | 732,459 | $7.8M | +8,514 | 1.2% |
| MIZUHO SECURITIES USA LLC | 648,610 | $6.8M | +372,984 | 135.3% |
| GOLDMAN SACHS GROUP INC | 623,342 | $6.6M | 0 | 0.0% |
| Wealthspring Capital LLC | 621,098 | $6.6M | -7,882 | -1.3% |
| Hudson Bay Capital Management LP | 597,018 | $6.3M | 0 | 0.0% |
| Radcliffe Capital Management, L.P. | 536,322 | $5.7M | +26,290 | 5.2% |
| BERKLEY W R CORP | 521,518 | $5.5M | 0 | 0.0% |
| TWO SIGMA INVESTMENTS, LP | 500,000 | $5.3M | 0 | 0.0% |
| WHITEBOX ADVISORS LLC | 500,000 | $5.3M | 0 | 0.0% |
| Periscope Capital Inc. | 450,000 | $4.8M | 0 | 0.0% |
New & Closed Positions this quarter
Closed Positions
4 managers exited
Top five by prior-quarter value
- METEORA CAPITAL, LLC$2.7M
- BCK Capital Management LP$488.7K
- CITADEL ADVISORS LLC$162.3K
- 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 SIMAW 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.