Magnetar collar options on CoreWeave expire worthless
Accepted by SEC EDGAR
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Form Type
4
Rhea-AI Filing Summary
CoreWeave, Inc. large holder reports option collar expiration
Investment entities associated with Magnetar Financial LLC reported that multiple call and put option positions linked to CoreWeave Class A Common Stock expired unexercised and for no value on March 20, 2026, as part of a previously established collar arrangement.
The filing notes that the options’ closing share price fell between the collar’s call and put strike prices, so neither side was exercised. The options were held indirectly through various Magnetar-managed funds, and Magnetar entities and David J. Snyderman disclaim beneficial ownership except to the extent of their pecuniary interest.
Insider Trade Summary
Derivative Expiration: 1,600,000 shares
Derivative Expiration
22 txns
Insider
Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role
10% Owner | 10% Owner | 10% Owner | 10% Owner
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Derivative Expiration | Call option (obligation to sell) | 235,080 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 235,080 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 30,820 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 30,820 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 3,187 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 3,187 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 68,703 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 68,703 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 94,321 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 94,321 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 118,230 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 118,230 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 26,713 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 26,713 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 100,572 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 100,572 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 61,982 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 61,982 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 49,931 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 49,931 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 10,461 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 10,461 | $0.00 | $0.00 |
Holdings After Transaction:
Call option (obligation to sell) — 0 contracts (Indirect, Footnotes);
Put option (right to sell) — 0 contracts (Indirect, Footnotes)
Footnotes (16)
- F1. In connection with the expiration of a call option and a put option entered into on August 27, 2025, as part of a collar arrangement, both options expired unexercised and for no value on March 20, 2026, as the closing price of the Class A Common Stock on such date was between the call strike price and the put strike price.
- F2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC, the general partner of Magnetar Structured Credit Fund, LP and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds").
- F3. 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 administrative manager of Supernova Management is David J. Snyderman, a citizen of the United States of America.
- F4. 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.
- F5. These securities are held directly by CW Opportunity LLC.
- F6. These securities are held directly by Magnetar Alpha Star Fund LLC.
- F7. These securities are held directly by Magnetar Capital Master Fund, Ltd.
- F8. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
- F9. These securities are held directly by Magnetar Lake Credit Fund LLC.
- F10. These securities are held directly by Magnetar Longhorn Fund LP.
- F11. These securities are held directly by Magnetar SC Fund Ltd.
- F12. These securities are held directly by Magnetar Structured Credit Fund, LP.
- F13. These securities are held directly by Magnetar Xing He Master Fund Ltd.
- F14. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
- F15. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
- F16. Expiration of a long derivative security for no value, transaction code "K" only.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Magnetar report in the latest CoreWeave (CRWV) Form 4 filing?
The filing shows Magnetar-affiliated funds had multiple call and put options on CoreWeave Class A stock expire unexercised for no value on March 20, 2026, as part of a collar arrangement entered into on August 27, 2025.
What type of derivative positions on CoreWeave (CRWV) did Magnetar’s funds have?
Magnetar-managed funds held call options and put options on CoreWeave Class A Common Stock as part of a collar structure. Both the call option obligations and put option rights expired unexercised and for no value on March 20, 2026, according to the disclosure.
Why did the CoreWeave (CRWV) options in Magnetar’s collar expire worthless?
The options expired worthless because CoreWeave’s Class A Common Stock closing price on March 20, 2026, was between the collar’s call strike price and put strike price, so neither the call options nor the put options were in-the-money and neither side was exercised.
Who actually holds the CoreWeave (CRWV) securities referenced in the Magnetar Form 4?
The securities are held directly by multiple Magnetar-managed vehicles, including CW Opportunity LLC and several Magnetar funds. Magnetar Financial, Magnetar Capital Partners, Supernova Management, and David J. Snyderman all disclaim beneficial ownership except to the extent of any pecuniary interest in those vehicles.
Does the Magnetar Form 4 change its economic exposure to CoreWeave (CRWV)?
The Form 4 records only the expiration of option positions for no value, so it reflects the natural maturity of a collar rather than new trades. It does not describe new CoreWeave share purchases, sales, or fresh derivative contracts in this particular disclosure.
AI-generated analysis. How Rhea-AI works. Not financial advice.
