Magnetar Reports 107,079-Share Collar on CoreWeave Expiring Mar 2026
Rhea-AI Filing Summary
Magnetar-related entities reported a collar transaction tied to CoreWeave, Inc. (CRWV) shares executed on 08/22/2025. The arrangement involved writing covered call options with a $160 strike and purchasing put options with a $70 strike, each set expiring 03/20/2026. The filing lists three option blocks covering 54,235, 43,690 and 9,154 Class A shares, respectively. The securities are held directly by three Magnetar funds and reported as indirect beneficial ownership; reporting parties include Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman. The filing states each entity disclaims beneficial ownership except for pecuniary interest.
Positive
- Filed disclosure of a collar arrangement including call and put strikes ($160 call, $70 put) and expiration date (03/20/2026).
- Identifies reporting parties and ownership chain (Magnetar Financial LLC; Magnetar Capital Partners LP; Supernova Management LLC; David J. Snyderman) and direct holders of shares.
Negative
- None.
Insights
TL;DR: Magnetar executed a collar on CRWV stock—simultaneous covered calls and protective puts with fixed strikes and a March 2026 expiration.
The Form 4 documents a collar entered on 08/22/2025 involving covered calls at a $160 strike and puts at a $70 strike expiring 03/20/2026. The transaction is split across three blocks covering 54,235; 43,690; and 9,154 Class A shares, all reported as indirect ownership. The filing identifies the specific Magnetar entities that hold the underlying shares and clarifies that only one option can be in-the-money at expiration, with in-the-money options settled in shares. This is a hedging structure explicitly stated in the filing; no trading price for premium is disclosed beyond per-share option strike values shown in the filing footers.
TL;DR: Reporting follows Section 16 requirements and discloses entity relationships and the collar mechanics; beneficial ownership is disclaimed except for pecuniary interest.
The filing names Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman as reporting persons and explains the ownership chain and disclaimers. It clearly states the securities are held directly by three specified funds and that each reporting entity disclaims beneficial ownership except to the extent of pecuniary interest. Signatures are made via attorney-in-fact on 08/25/2025. The disclosure is procedural and compliant in content presented; the filing does not provide premium paid/received for the options or other economic terms beyond strike prices and stated share counts.
Insider Trade Summary
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Call option (obligation to sell) | 54,235 | $406,762.50 | $22.06B |
| Purchase | Put option (right to sell) | 54,235 | $542,350.00 | $29.41B |
| Sale | Call option (obligation to sell) | 43,690 | $327,675.00 | $14.32B |
| Purchase | Put option (right to sell) | 43,690 | $436,900.00 | $19.09B |
| Sale | Call option (obligation to sell) | 9,154 | $68,655.00 | $628.47M |
| Purchase | Put option (right to sell) | 9,154 | $91,540.00 | $837.96M |
Footnotes (1)
- The entity holding the underlying shares of Class A common stock (the "Common Stock") of CoreWeave, Inc. entered into a collar arrangement pursuant to which such entity wrote a covered call option and purchased a put option. Only one of the options can be in-the-money on the expiration date, at which time the in-the-money option will be exercised and settled in shares and the other option will expire. If neither option is in-the-money on the expiration date, both options will expire. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC and Purpose Alternative Credit Fund - T LLC (collectively, the "Magnetar Funds"). Magnetar Capital Partners LP ("Magnetar Capital Partners") is the sole member and parent holding company of Magnetar Financial. Supernova Management LLC ("Supernova Management") is the general partner of Magnetar Capital Partners. The manager of Supernova Management is David J. Snyderman, a citizen of the United States of America. Each of the Magnetar Funds, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaims beneficial ownership of these shares of Common Stock of the Issuer, except to the extent of its or his pecuniary interest therein. These securities are held directly by Magnetar Xing He Master Fund Ltd. These securities are held directly by Purpose Alternative Credit Fund - F LLC. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
