13F value (AUM)
$11.0B
Magnetar Financial
MAGNETAR FINANCIAL LLC
$11.0B
13F long value · 2026-Q2Positions1134
CategoryAsset Manager
Quarters tracked9
● #488 of 581 by 13F value
Size rank 2/10
60 NEW43 ADD46 2×+92 TRIM40 NEAR EXIT36 EXIT
Snapshot
Magnetar Financial's 13F portfolio at a glance — size, concentration and this quarter's activity.
Positions
1134 (542 unmapped)
Top 100 weight
80.6%
Quarters tracked
9
Latest 13F filed
Aug 14, 2026
New positions
60
Exits / near-exits
76
13F value by quarter
Total reported long value each quarter — fund flows plus market moves.
Top holdings — 2026-Q2
The fund's largest reported positions (PUT/CALL rows are option positions, reported separately). The 100 shown cover 80.6% of the portfolio.
| Ticker | Issuer | Weight | Value | Shares | Since 2026-Q2 |
|---|---|---|---|---|---|
| CRWV | COREWEAVE INC | 47.3% | $5.2B | 52.1M | +12.6% |
| — | HEWLETT PACKARD ENTERPRISE C | 0.8% | $89.0M | 760.0K | — |
| WBS | WEBSTER FINL CORP | 0.8% | $88.4M | 1.2M | — |
| KVUE | KENVUE INC | 0.8% | $88.2M | 4.6M | -8.3% |
| GTLS | CHART INDS INC | 0.8% | $87.4M | 418.3K | -0.7% |
| NSC | NORFOLK SOUTHN CORP | 0.8% | $86.6M | 275.2K | +1.4% |
| — | JD.COM INC | 0.8% | $85.1M | 86.6M | — |
| D | DOMINION ENERGY INC | 0.8% | $83.3M | 1.2M | -8.5% |
| TXNM | TXNM ENERGY INC | 0.8% | $82.2M | 1.4M | +3.8% |
| PEN | PENUMBRA INC | 0.7% | $80.8M | 255.8K | +3.9% |
| TECK | TECK RESOURCES LTD | 0.7% | $79.1M | 1.3M | +1.3% |
| — | MICROCHIP TECHNOLOGY INC. | 0.7% | $75.6M | 982.2K | — |
| — | ALPHABET INC | 0.7% | $75.5M | 1.5M | — |
| — | ALIBABA GROUP HLDG LTD | 0.7% | $74.5M | 63.2M | — |
| WBD | WARNER BROS DISCOVERY INC | 0.7% | $73.3M | 2.7M | +0.6% |
Option positions — 2026-Q2
$17.3M across 1 put position vs $0.00 across 0 call positions. Values are notional — the market value of the shares the options reference.
| Type | Ticker | Issuer | Underlying shares | Notional value | % of 13F value |
|---|---|---|---|---|---|
| PUT | IWM | ISHARES TR | 57.5K | $17.3M | 0.2% |
Quarterly changes — 2026-Q2
What Magnetar Financial opened, added, trimmed and exited this quarter, largest dollar moves first.
| Action | Ticker | Issuer | Prev shares | Curr shares | Change | Value Δ |
|---|---|---|---|---|---|---|
| EXIT | AL | AIR LEASE CORP | 1.3M | 0 | -100.0% | -$87.2M |
| NEW | D | DOMINION ENERGY INC | — | 1.2M | — | +$83.3M |
| EXIT | PRA | PROASSURANCE CORP | 3.2M | 0 | -100.0% | -$80.3M |
| EXIT | MASI | MASIMO CORP | 427.1K | 0 | -100.0% | -$76.0M |
| NEW | — | ALPHABET INC | — | 1.5M | — | +$75.5M |
| 2×+ | ROKU | ROKU INC | 3.6K | 507.1K | +13811.7% | +$69.7M |
| EXIT | CSGS | CSG SYS INTL INC | 807.4K | 0 | -100.0% | -$64.5M |
| NEW | — | FIRSTENERGY CORP | — | 56.5M | — | +$61.7M |
| EXIT | FOLD | AMICUS THERAPEUTIC | 4.0M | 0 | -100.0% | -$57.6M |
| NEW | — | GAMESTOP CORP | — | 55.6M | — | +$56.8M |
Conviction over time
Portfolio weight of the current top long holdings, quarter by quarter — rising weight = growing conviction.