Magnetar Capital Partners LP

CIK 1353085 · last filed 2026-06-03

Magnetar Capital Partners LP is a corporate insider who has filed 35 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for CRWV, was dated Jun 3, 2026. Across all open-market trades the lifetime net is −$5.86B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $380.1M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$380.13M

Companies

5

Total Filings

35

Lifetime Open-Market Net

-$5.86B

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
CRWV 10%+ Owner 3,771,601 $100.55 $379.23M -$5.81B 29 2026-06-03
WHLRP 10%+ Owner 108,973 $8.20 $893.6K -$85.4K 1 2026-04-09
Rithm Property Trust Inc. (AJXA) Delisted 10%+ Owner 156,400 $25.07 $3.92M -$39.21M 2 2022-07-28
KINTERA INC (UNCL) Delisted 10%+ Owner 3,971,990 -$2.40M 2 2008-05-19
ATLAS ENERGY, INC. (ATLS) Delisted 10%+ Owner 2,655,030 -$9.60M 1 2008-04-15

Recent Filings

35 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-06-03 CRWV Sell (S) $0 EDGAR
2026-05-08 CRWV Sell (S) −2,348,040 -$305.03M EDGAR
2026-05-08 CRWV Sell (S) −4,810,624 -$657.76M EDGAR
2026-05-08 CRWV Sell (S) $0 EDGAR
2026-05-06 CRWV Sell (S) −1,397,748 -$178.46M EDGAR
2026-05-06 CRWV Sell (S) $0 EDGAR
2026-05-01 CRWV Sell (S) $0 EDGAR
2026-04-24 CRWV Sell (S) −3,844,676 -$469.58M EDGAR
2026-04-22 CRWV Sell (S) −1,279,340 -$150.10M EDGAR
2026-04-17 CRWV Sell (S) −912,180 -$107.91M EDGAR
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.