Form 4: Magnetar Funds Adjust CoreWeave Holdings, Implement Collars

Magnetar Financial LLC and affiliated funds reported sales of CoreWeave Class A Common Stock and established collar option positions on a significant number of shares.

Summary

• Magnetar Financial LLC and its affiliated funds (Magnetar Funds), identified as 10% owners and directors of CoreWeave, Inc. (CRWV), reported transactions in Class A Common Stock.
• On September 30, 2025, Magnetar Funds sold a total of 90,691 shares of CoreWeave Class A Common Stock.
• These sales were executed at weighted average prices ranging from $137.10 to $142.01 per share, totaling approximately $13.91 million.
• Following these transactions, Magnetar Funds indirectly beneficially own a total of 13,970,487 shares of Class A Common Stock.
• Magnetar Funds also entered into collar arrangements on September 30, 2025, covering 428,162 shares of Class A Common Stock.
• These collar positions involve writing call options with a strike price of $200 and purchasing put options with a strike price of $115, all expiring on June 18, 2026.
• The collar strategy is a hedging mechanism where only one option can be in-the-money at expiration, or both expire if the stock price is between the strikes.

Sentiment

Score: 5

Explanation: The filing reports routine insider transactions involving stock sales and the establishment of hedging positions (collars). This indicates portfolio management and risk mitigation rather than a strong positive or negative signal about the company's fundamental performance.

Positives

• Sales of Class A Common Stock were executed at favorable weighted average prices ranging from $137.10 to $142.01 per share.
• The establishment of collar options provides a hedging strategy, limiting downside risk while allowing for some upside participation up to the call option strike price.

Negatives

• Magnetar Funds reduced their direct beneficial ownership of CoreWeave Class A Common Stock by 90,691 shares.

Risks

• The collar strategy limits potential upside gains if CoreWeave's stock price significantly exceeds the call option strike price of $200 by the expiration date of June 18, 2026.
• While providing downside protection, the put option strike price of $115 still exposes the holder to losses if the stock price falls below this level by the expiration date.

Future Outlook

The derivative positions (collar options) have an expiration date of June 18, 2026, indicating a defined timeframe for the hedging strategy. No other explicit forward-looking statements or guidance were provided.

Management Comments

• 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.

Industry Context

This filing is specific to insider trading activity and does not provide broader industry trends or competitive analysis. It reflects a large institutional investor's portfolio management decisions within the technology infrastructure sector, specifically related to CoreWeave.

Related Party Transactions

• Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, all identified as 10% owners and directors of CoreWeave, Inc., are the reporting persons for these transactions, making them related-party dealings.

Stakeholder Impact

• Shareholders: The sale of shares by a significant owner could be perceived as a signal, but the simultaneous establishment of a collar suggests a hedging strategy rather than a complete divestment, potentially indicating a defined range of expected price movement by a sophisticated investor.
• Company: No direct operational impact, but insider trading activity is closely monitored by the market and can influence investor sentiment.

Next Steps

• The collar options will remain active until their expiration date of June 18, 2026, at which point they will either be exercised, expire, or be rolled over.

Key Dates

Recommendation

The filing details a large institutional investor's portfolio adjustments, including stock sales and the implementation of a collar strategy. This suggests a move towards risk management and locking in gains rather than a strong conviction for either significant upside or downside, thus warranting a 'hold' recommendation for other investors.

Keywords

CoreWeave, CRWV, Magnetar, SEC Form 4, Insider Transaction, Stock Sale, Options, Collar Strategy, Hedging, Beneficial Ownership