Institutional Manager · CIK 0001352851
Magnetar Financial LLC
Evanston, IL · File #028-11800
Latest AUM
$10.21B
Positions
1,486
Top-10 Concentration
78.2%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | COREWEAVE INC | CRWV | -13,791,931 | -$987.6M | -$5.35B |
| ADD | AIR LEASE CORP | AIIR | +799,168 | +$51.3M | +$211,198 |
| ADD | FRONTIER COMMUNICATIONS PARE | 35909D109 | +1,342,679 | +$51.1M | +$312,314 |
| ADD | CYBERARK SOFTWARE LTD | M2682V108 | +96,873 | +$43.2M | -$1.8M |
| NEW | CIDARA THERAPEUTICS INC | 171757206 | +174,224 | +$38.5M | $0 |
| ADD | QORVO INC | QRVO | +407,827 | +$34.5M | -$10,630 |
| ADD | ESSENTIAL UTILS INC | 29670G102 | +897,958 | +$34.4M | -$10,113 |
| NEW | CHURCHILL CAP CORP XI | G2131A124 | +2,700,000 | +$27.6M | $0 |
| NEW | RITHM PPTY TR INC | 38983D854 | +1,639,033 | +$27.2M | $0 |
| EXITED | DRUGS MADE IN AMER ACQ II CO | G2851K120 | -2,700,000 | -$26.9M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 20251,486 pos · $10.21B
- 13F HOLDINGS REPORTQ/E Sep 20251,474 pos · $16.50B
- 13F HOLDINGS REPORTQ/E Jun 20251,512 pos · $20.65B
- 13F HOLDINGS REPORTQ/E Mar 20251,329 pos · $7.61B
- 13F HOLDINGS REPORTQ/E Dec 2024942 pos · $4.36B
- 13F HOLDINGS REPORTQ/E Sep 2024829 pos · $4.62B
- 13F HOLDINGS REPORTQ/E Jun 2024497 pos · $4.80B
- 13F HOLDINGS REPORTQ/E Mar 2024363 pos · $4.47B
- 13F HOLDINGS REPORTQ/E Dec 2023435 pos · $3.92B
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | COREWEAVE INC | CRWV | 68,191,394 | $4.88B | 69.06% |
| 2 | CHART INDS INC | 16115Q308 | 365,904 | $75.5M | 1.07% |
| 3 | AIR LEASE CORP | AIIR | 1,163,302 | $74.7M | 1.06% |
| 4 | TXNM ENERGY INC | TXNM | 1,250,304 | $73.6M | 1.04% |
| 5 | NORFOLK SOUTHN CORP | 655844108 | 253,145 | $73.1M | 1.03% |
| 6 | COMERICA INC | 200340107 | 838,447 | $72.9M | 1.03% |
| 7 | REV GROUP INC | 749527107 | 1,185,971 | $72.1M | 1.02% |
| 8 | TECK RESOURCES LTD | TCKRF | 1,416,305 | $67.8M | 0.96% |
| 9 | FRONTIER COMMUNICATIONS PARE | 35909D109 | 1,776,448 | $67.6M | 0.96% |
| 10 | KENVUE INC | KVUE | 3,912,946 | $67.5M | 0.95% |
| 11 | WARNER BROS DISCOVERY INC | WBD | 2,327,542 | $67.1M | 0.95% |
| 12 | CYBERARK SOFTWARE LTD | M2682V108 | 145,163 | $64.8M | 0.92% |
| 13 | TEGNA INC | 87901J105 | 3,289,776 | $63.9M | 0.90% |
| 14 | PROASSURANCE CORP | PRA | 2,617,762 | $63.2M | 0.89% |
| 15 | AVIDITY BIOSCIENCES INC | 05370A108 | 873,103 | $63.0M | 0.89% |
| 16 | CONFLUENT INC | 20717M103 | 1,923,425 | $58.2M | 0.82% |
| 17 | TRIP COM GROUP LTD | TRPCF | 44,708,000 | $55.0M | 0.78% |
| 18 | EXACT SCIENCES CORP | 30063P105 | 531,246 | $54.0M | 0.76% |
| 19 | ALIBABA GROUP HLDG LTD | BBAAY | 31,500,000 | $49.0M | 0.69% |
| 20 | CSG SYS INTL INC | 126349109 | 606,753 | $46.5M | 0.66% |