Magnetar Capital Partners LP is 10% Owner at CoreWeave, Inc. (CRWV). They have made 24 open-market trades across 4 companies since 2007, most recently 2026-03-26.
CIK 0001353085
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases since 2025, against 24 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CRWV | 300,153 | $18.4M |
| ATLS | 2,655,030 | $1.8M |
| WHLR | 172,075 | $64K |
| KNTA | 4,151,400 | — |
| Total | $20.3M |
Shares reported on the most recent Form 4, priced at the 2026-03-26 close. 1 holding could not be priced and is excluded from the total.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 68% | 95% |
| Avg Move | -6.4% | -10.3% | -23.3% |
| Scored | 22 | 22 | 22 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WHLR | SELL | 2026-03-26 | 2026-03-26 | $1.10 | $10K | -19.2% | +83.5% | +113.6% |
| CRWV | SELL | 2025-10-31 | 2025-10-31 | $135.65 | $89.5M | -36.2% | -42.4% | -25.6% |
| CRWV | SELL | 2025-10-29 | 2025-10-29 | $138.48 | $218.4M | -22.0% | -46.0% | -19.6% |
| CRWV | SELL | 2025-10-28 | 2025-10-29 | $138.61 | $104.8M | -22.0% | -46.0% | -19.6% |
| CRWV | SELL | 2025-10-28 | 2025-10-29 | $138.63 | $110.4M | -22.0% | -46.0% | -19.6% |
| CRWV | SELL | 2025-10-27 | 2025-10-29 | $135.02 | $143.4M | -22.0% | -46.0% | -19.6% |
| CRWV | SELL | 2025-10-15 | 2025-10-17 | $138.75 | $149.1M | +1.5% | -45.4% | -31.1% |
| CRWV | SELL | 2025-10-15 | 2025-10-17 | $138.73 | $132.6M | +1.5% | -45.4% | -31.1% |
| CRWV | SELL | 2025-10-13 | 2025-10-15 | $141.26 | $79.4M | -3.8% | -45.3% | -38.2% |
| CRWV | SELL | 2025-10-10 | 2025-10-10 | $148.88 | $50.7M | -14.3% | -25.6% | -45.7% |
| CRWV | SELL | 2025-10-06 | 2025-10-07 | $139.27 | $158.7M | +3.7% | -19.0% | -41.8% |
| CRWV | SELL | 2025-10-03 | 2025-10-07 | $139.40 | $311.3M | +3.7% | -19.0% | -41.8% |
| CRWV | SELL | 2025-10-02 | 2025-10-02 | $138.20 | $41.3M | -3.6% | -9.1% | -48.5% |
| CRWV | SELL | 2025-09-25 | 2025-09-26 | $136.33 | $281.3M | +16.0% | +12.7% | -36.7% |
| CRWV | SELL | 2025-09-22 | 2025-09-22 | $132.42 | $190.5M | +1.7% | -10.4% | -37.5% |
| CRWV | SELL | 2025-09-18 | 2025-09-22 | $120.62 | $42.5M | +1.7% | -10.4% | -37.5% |
| CRWV | SELL | 2025-09-15 | 2025-09-17 | $119.93 | $128.1M | +0.1% | +11.8% | -43.2% |
| CRWV | SELL | 2025-09-11 | 2025-09-11 | $118.05 | $48.3M | +14.9% | +24.3% | -22.6% |
| CRWV | SELL | 2025-09-09 | 2025-09-11 | $103.84 | $119.1M | +14.9% | +24.3% | -22.6% |
| CRWV | SELL | 2025-08-22 | 2025-08-25 | $98.19 | $4.0M | -3.0% | +45.3% | -19.8% |
| CRWV | SELL | 2025-08-15 | 2025-08-19 | $100.15 | $175.3M | +14.3% | +34.6% | -16.4% |
| ATLS | SELL | 2008-04-11 | 2008-04-15 | $67.09 | $3.2M | -47.4% | -8.0% | -8.0% |
| KNTA | SELL | 2007-07-03 | 2007-07-06 | $2.50 | $25K | N/A | N/A | N/A |
| KNTA | SELL | 2007-04-25 | 2007-04-27 | $1.60 | $800K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.