New Positions
15 managers initiated
Top five by reported value
SOCAW SOCAW
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
15 new11 added28 reduced1 exited
Total Institutional Holders
54
as of 2025-12-31
Top Holder
D. E. Shaw & Co., Inc.
$8.6M
Largest QoQ Increase
MOORE CAPITAL MANAGEMENT, LP
+750,000 sh
Largest QoQ Decrease
MIZUHO SECURITIES USA LLC
-491,679 sh
New Positions(15)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| MOORE CAPITAL MANAGEMENT, LP | 750,000 | +750,000 | $7.5M | +$7.5M | — |
| Alberta Investment Management Corp | 500,000 | +500,000 | $5.0M | +$5.0M | — |
| PICTON MAHONEY ASSET MANAGEMENT | 500,000 | +500,000 | $5.0M | +$5.0M | — |
| Magnetar Financial LLC | 401,000 | +401,000 | $4.0M | +$4.0M | — |
| UBS OCONNOR LLC | 250,000 | +250,000 | $2.5M | +$2.5M | — |
| Wealthspring Capital LLC | 170,904 | +170,904 | $1.7M | +$1.7M | — |
| Parallax Volatility Advisers, L.P. | 100,000 | +100,000 | $1.0M | +$1.0M | — |
| HEIGHTS CAPITAL MANAGEMENT, INC | 50,000 | +50,000 | $502.5K | +$502.5K | — |
| PenderFund Capital Management Ltd. | 29,100 | +29,100 | $292.5K | +$292.5K | — |
| ABC ARBITRAGE SA | 25,000 | +25,000 | $251.3K | +$251.3K | — |
| TrueMark Investments, LLC | 15,220 | +15,220 | $153.0K | +$153.0K | — |
| UBS Group AG | 149 | +149 | $1.5K | +$1.5K | — |
| MORGAN STANLEY | 47 | +47 | $472 | +$472 | — |
| Virtu Financial LLC | 38,459 | +38,459 | $387 | +$387 | — |
| BANK OF AMERICA CORP /DE/ | 10 | +10 | $100 | +$100 | — |
Added To(11)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Westchester Capital Management, LLC | 640,000 | +340,000 | $6.4M | +$3.4M | 113.3% |
| Karpus Management, Inc. | 268,615 | +193,000 | $2.7M | +$1.9M | 255.2% |
| METEORA CAPITAL, LLC | 236,136 | +166,998 | $2.4M | +$1.7M | 241.5% |
| MILLENNIUM MANAGEMENT LLC | 500,000 | +150,000 | $5.0M | +$1.5M | 42.9% |
| MANGROVE PARTNERS | 200,000 | +150,000 | $2.0M | +$1.5M | 300.0% |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 610,630 | +115,219 | $6.1M | +$1.2M | 23.3% |
| WOLVERINE ASSET MANAGEMENT LLC | 627,958 | +42,852 | $6.3M | +$483.3K | 7.3% |
| DLD Asset Management, LP | 133,333 | +33,333 | $1.3M | +$344.0K | 33.3% |
| Radcliffe Capital Management, L.P. | 328,299 | +28,259 | $3.3M | +$311.0K | 9.4% |
| Clear Street Group Inc. | 224,623 | +19,989 | $2.3M | +$219.3K | 9.8% |
| Verition Fund Management LLC | 18,982 | +2,145 | $190.8K | +$23.1K | 12.7% |
Reduced(28)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| MIZUHO SECURITIES USA LLC | 100,565 | -491,679 | $1.0M | -$4.0M | -83.0% |
| Shaolin Capital Management LLC | 342,467 | -262,133 | $3.4M | -$2.6M | -43.4% |
| TORONTO DOMINION BANK | 139,700 | -90,300 | $1.4M | -$886.8K | -39.3% |
| Periscope Capital Inc. | 398,600 | -51,400 | $4.0M | -$480.0K | -11.4% |
| Schonfeld Strategic Advisors LLC | 44,643 | -35,473 | $448.7K | -$349.3K | -44.3% |
| D. E. Shaw & Co., Inc. | 853,875 | 0 | $8.6M | +$76.8K | 0.0% |
| Polar Asset Management Partners Inc. | 800,000 | 0 | $8.0M | +$56.0K | 0.0% |
| Linden Advisors LP | 600,000 | 0 | $6.0M | +$54.0K | 0.0% |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 600,000 | 0 | $6.0M | +$54.0K | 0.0% |
| Hudson Bay Capital Management LP | 600,000 | 0 | $6.0M | +$54.0K | 0.0% |
| TWO SIGMA INVESTMENTS, LP | 497,161 | 0 | $5.0M | +$44.7K | 0.0% |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 416,687 | 0 | $4.2M | +$37.5K | 0.0% |
| HBK INVESTMENTS L P | 300,000 | 0 | $3.0M | +$27.0K | 0.0% |
| Fort Baker Capital Management LP | 300,000 | 0 | $3.0M | +$27.0K | 0.0% |
| Centiva Capital, LP | 250,000 | 0 | $2.5M | +$22.5K | 0.0% |
| AQR Arbitrage LLC | 226,740 | 0 | $2.3M | +$20.4K | 0.0% |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 184,170 | 0 | $1.9M | +$16.6K | 0.0% |
| ARISTEIA CAPITAL LLC | 150,000 | 0 | $1.5M | +$13.5K | 0.0% |
| GRITSTONE ASSET MANAGEMENT LLC | 125,000 | 0 | $1.3M | +$11.3K | 0.0% |
| WHITEBOX ADVISORS LLC | 100,000 | 0 | $1.0M | +$9.0K | 0.0% |
| First Trust Capital Management L.P. | 100,000 | 0 | $1.0M | +$9.0K | 0.0% |
| BERKLEY W R CORP | 99,230 | 0 | $997.3K | +$8.9K | 0.0% |
| BNP PARIBAS ARBITRAGE, SNC | 73,260 | 0 | $736.3K | +$6.6K | 0.0% |
| JPMORGAN CHASE & CO | 70,992 | 0 | $713.5K | +$6.4K | 0.0% |
| DELTEC ASSET MANAGEMENT LLC | 50,000 | 0 | $502.5K | +$4.5K | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 77,485 | -1,073 | $778.7K | -$3.7K | -1.4% |
| Warberg Asset Management LLC | 24,895 | -105 | $250.2K | +$695 | -0.4% |
| GLAZER CAPITAL, LLC | 785,072 | -9,966 | $7.9K | -$29 | -1.3% |
Sold Out(1)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Quarry LP | 0 | -247 | $0 | -$2.5K | — |
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.
New & Closed Positions this quarter
Closed Positions
1 managers exited
Top five by prior-quarter value
- Quarry LP$2.5K
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 SOCAW 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.