Call option sales on 2M CoreWeave (CRWV) shares by Magnetar funds
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
CoreWeave, Inc. had large derivative insider activity reported by Magnetar-affiliated entities. The Form 4 shows 12 open-market sales of call options labeled as an “obligation to sell,” tied to an aggregate 2,000,000 shares of Class A Common Stock at a $150.00 exercise price, all dated April 29, 2026 and expiring on December 18, 2026.
The options are held directly by various Magnetar Funds, including CW Opportunity 2 LP, CW Opportunity LLC, Magnetar Alpha Star Fund LLC and others, while Magnetar Financial LLC and related entities report as advisers or parent entities. They each disclaim beneficial ownership of the CoreWeave shares except to the extent of their pecuniary interest.
Positive
- None.
Negative
- None.
Insights
Magnetar-managed funds sold call options referencing 2M CoreWeave shares at a $150 strike.
The filing reports 12 derivative transactions, each a call option described as an obligation to sell CoreWeave Class A Common Stock. In total, they reference 2,000,000 underlying shares at a conversion or exercise price of $150.00 per share, expiring on December 18, 2026.
The securities are held directly by multiple Magnetar Funds such as CW Opportunity 2 LP and CW Opportunity LLC, while Magnetar Financial LLC and related entities act as adviser or parent entities and disclaim beneficial ownership except for pecuniary interest. The transactions are all coded as open-market sales of derivatives, and the summary shows a net-sell direction, but the filing does not provide CoreWeave’s total shares outstanding to gauge proportional impact.
Insider Trade Summary
Net Seller: 2,000,000 shares ($11,298,839,121,567)
Net Sell
12 txns
Insider
Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role
null | null | null | null
Sold
2,000,000 shs ($11298.84B)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Call option (obligation to sell) | 169,612 | $3,434,643.00 | $582.56B |
| Sale | Call option (obligation to sell) | 537,865 | $10,891,766.25 | $5858.30B |
| Sale | Call option (obligation to sell) | 70,515 | $1,427,928.75 | $100.69B |
| Sale | Call option (obligation to sell) | 7,289 | $147,602.25 | $1.08B |
| Sale | Call option (obligation to sell) | 157,189 | $3,183,077.25 | $500.34B |
| Sale | Call option (obligation to sell) | 215,805 | $4,370,051.25 | $943.08B |
| Sale | Call option (obligation to sell) | 270,509 | $5,477,807.25 | $1481.80B |
| Sale | Call option (obligation to sell) | 61,120 | $1,237,680.00 | $75.65B |
| Sale | Call option (obligation to sell) | 230,106 | $4,659,646.50 | $1072.21B |
| Sale | Call option (obligation to sell) | 141,815 | $2,871,753.75 | $407.26B |
| Sale | Call option (obligation to sell) | 114,240 | $2,313,360.00 | $264.28B |
| Sale | Call option (obligation to sell) | 23,935 | $484,683.75 | $11.60B |
Holdings After Transaction:
Call option (obligation to sell) — 169,612 shares (Indirect, Footnotes)
Footnotes (1)
- Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, 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 DBA Magnetar Constellation Onshore Fund (They are not separate legal entities) and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund 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 administrative 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 CW Opportunity 2 LP. These securities are held directly by CW Opportunity LLC. These securities are held directly by Magnetar Alpha Star Fund LLC. These securities are held directly by Magnetar Capital Master Fund, Ltd. These securities are held directly by Magnetar Constellation Master Fund, Ltd. These securities are held directly by Magnetar Lake Credit Fund LLC. These securities are held directly by Magnetar Longhorn Fund LP. These securities are held directly by Magnetar SC Fund Ltd. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities. 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.
Key Figures
Underlying shares in call options: 2,000,000 shares
Exercise price: $150.00 per share
Largest single call option sale: 537,865 options
+2 more
5 metrics
Underlying shares in call options
2,000,000 shares
Aggregate underlying Class A Common Stock in 12 derivative sales on April 29, 2026
Exercise price
$150.00 per share
Conversion or exercise price for each call option (obligation to sell)
Largest single call option sale
537,865 options
One derivative transaction dated April 29, 2026 referencing Class A shares
Derivative transactions reported
12 entries
Call option (obligation to sell) transactions in this Form 4
Net share direction
2,000,000 shares sold
transactionSummary netBuySellShares with net-sell direction
Key Terms
Call option (obligation to sell), beneficial ownership, pecuniary interest, investment adviser, +1 more
5 terms
Call option (obligation to sell) financial
"security_title: "Call option (obligation to sell)""
beneficial ownership financial
"disclaims beneficial ownership of these shares of Common Stock of the Issuer"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"disclaims beneficial ownership ... except to the extent of its or his pecuniary interest therein"
investment adviser financial
"Magnetar Financial LLC serves as the investment adviser to each of CW Opportunity 2 LP"
An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.
general partner financial
"Magnetar Capital Partners LP is the sole member and parent holding company ... and the general partner"
A general partner is the person or firm that runs an investment partnership and legally represents it — they make the day-to-day decisions, choose which assets to buy or sell, and are responsible for the partnership’s obligations. Investors care because the general partner’s judgment, risk-taking and fee and profit-sharing arrangements determine both the potential returns and the level of exposure to losses; think of the GP as the ship’s captain whose skill and honesty shape the voyage’s outcome.
FAQ
Who directly holds the CoreWeave (CRWV) option positions reported in this Form 4?
The securities are held directly by various Magnetar Funds, including CW Opportunity 2 LP, CW Opportunity LLC, Magnetar Alpha Star Fund LLC and several related vehicles. Magnetar Financial LLC and affiliated entities report as adviser or parent entities rather than direct holders of the CoreWeave securities.
Do Magnetar entities claim full beneficial ownership of the CoreWeave (CRWV) securities?
No. The filing states that each Magnetar Fund and related Magnetar entities disclaim beneficial ownership of the CoreWeave Common Stock, except to the extent of its or his pecuniary interest. This means they only acknowledge economic exposure rather than full beneficial ownership of all reported shares.
What are the key terms of the CoreWeave (CRWV) call options sold by Magnetar funds?
Each reported derivative is a call option labeled as an obligation to sell Class A Common Stock with a conversion or exercise price of $150.00 per share. All options share a common expiration date of December 18, 2026, according to the Form 4 transaction details.