Magnetar reports 67.97M CRWV shares (14.9%)

CoreWeave, Inc. ownership update: Magnetar-related entities and an affiliated individual may be deemed to beneficially own 67,972,524 shares of Class A common stock, representing 14.9% of the class as of May 5, 2026.

Rhea-AI Filing Summary

CoreWeave, Inc. ownership update: Magnetar-related entities and an affiliated individual may be deemed to beneficially own 67,972,524 shares of Class A common stock, representing 14.9% of the class as of May 5, 2026. The filing cites 442,969,348 shares outstanding as of April 15, 2026 and notes that 12,054,668 of the reported shares underlie warrants that are currently exercisable.

The statement clarifies reporting relationships: Magnetar Financial serves as adviser to the listed Magnetar Funds, Magnetar Capital Partners is the parent of Magnetar Financial, Supernova Management is the general partner, and David J. Snyderman is manager of Supernova Management.

Insights

Corporate Governance Analyst

Large passive stake disclosed with adviser/parent structure noted.

The filing documents a 14.9% beneficial position held through multiple Magnetar Funds and related entities, with shared voting and dispositive power over 67,972,524 shares. The disclosure clarifies chain-of-control among adviser, parent, and manager.

Key dependencies include the exercisability of 12,054,668 warrant‑underlying shares and the reported outstanding share base of 442,969,348 as of April 15, 2026. Subsequent filings may update percentages if exercises or other transfers occur.

Market Structure Specialist

The stake size could influence future sale or governance dynamics, depending on holder actions.

The report shows shared voting/dispositive power and identifies the exact funds holding securities, which is useful for tracking potential coordinated activity. The presence of exercisable warrants means the effective position can change upon exercise.

Cash‑flow treatment and any intended disposition methods are not stated; market impact will depend on holder decisions and any later public disclosures.

Key Figures

Beneficial ownership: 67,972,524 shares Percent of class: 14.9% Shares outstanding: 442,969,348 shares +1 more

4 metrics

Beneficial ownership 67,972,524 shares As of May 5, 2026

Percent of class 14.9% Based on 442,969,348 shares outstanding as of April 15, 2026

Shares outstanding 442,969,348 shares As of April 15, 2026 (proxy statement basis)

Warrant‑underlying shares 12,054,668 shares Shares that underlie currently exercisable warrants included in reported total

Key Terms

Penny Warrants, Beneficially own, Joint Filing Agreement

3 terms

Penny Warrants financial

"the potential exercise of Penny Warrants held by certain of the Magnetar Funds"

A penny warrant is a tradable right, often issued cheaply or trading for only a few cents, that lets the holder buy a company’s stock at a predetermined price. Think of it as a low-cost lottery ticket that can turn into a share if the stock moves enough; it magnifies gains but can also expire worthless. Investors care because penny warrants offer high upside with high risk and can increase a company’s share count if exercised, diluting existing holders.

Beneficially own regulatory

"each of the Reporting Persons may be deemed to beneficially own 67,972,524 shares"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

Joint Filing Agreement regulatory

"Joint Filing Agreement, by and among the Reporting Persons, dated as of April 1, 2025"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake did Magnetar report in CoreWeave (CRWV)?

Magnetar-related parties reported beneficial ownership of 67,972,524 shares, representing 14.9% of the class. The filing ties this percentage to an outstanding share count of 442,969,348 as of April 15, 2026 and notes exercisable warrants underlying 12,054,668 shares.

Which Magnetar entities are named in the CRWV filing?

The filing names Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman. It states their adviser/parent/general partner relationships and a shared principal business address in Evanston, Illinois.

Do the reported shares include warrants or contingent shares?

Yes. The filing states that 12,054,668 of the shares the Reporting Persons may be deemed to beneficially own are shares that underlie warrants that are currently exercisable. Those shares are included in the 67,972,524 total reported.

How is voting and dispositive power described for the reported holdings?

Each Reporting Person is shown with 0 sole voting power and 67,972,524 shared voting power, and similarly 0 sole dispositive power and 67,972,524 shared dispositive power, per the filing's itemized ownership table.

What address and CUSIP are listed in the disclosure for CRWV?

The issuer's principal office is listed as 290 W Mt. Pleasant Ave., Suite 4100, Livingston, NJ, and the CUSIP for Class A common stock is 21873S108, as shown on the filing header.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/06/2026 - 09:55 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

CoreWeave, Inc.

(Name of Issuer)

Class A common stock, par value 0.000005 per share

(Title of Class of Securities)

21873S108

(CUSIP Number)

04/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 21873S108

1

Names of Reporting Persons

Magnetar Financial LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 67,972,524.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 67,972,524.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

67,972,524.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.9 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 21873S108

1

Names of Reporting Persons

Magnetar Capital Partners LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 67,972,524.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 67,972,524.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

67,972,524.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.9 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 21873S108

1

Names of Reporting Persons

Supernova Management LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 67,972,524.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 67,972,524.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

67,972,524.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.9 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 21873S108

1

Names of Reporting Persons

David J. Snyderman

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 67,972,524.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 67,972,524.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

67,972,524.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.9 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CoreWeave, Inc.
(b)	Address of issuer's principal executive offices: 290 W Mt. Pleasant Ave., Suite 4100, Livingston, NJ 07039
Item 2.
(a)	Name of person filing: This statement is filed on behalf of each of the following persons (collectively, the "Reporting Persons"): (i) Magnetar Financial LLC ("Magnetar Financial"); (ii) Magnetar Capital Partners LP ("Magnetar Capital Partners"); (iii) Supernova Management LLC ("Supernova Management"); and (iv) David J. Snyderman ("Mr. Snyderman"). This statement relates to shares of Class A common stock, par value $0.000005 ("Common Stock") of the Issuer (a) held directly by the Magnetar Funds (as defined herein) and (b) issuable to the Magnetar Funds upon (i) the potential exercise of Warrants (the "Warrants") held by certain of the Magnetar Funds, (ii) the potential exercise of Penny Warrants (the "Penny Warrants") held by certain of the Magnetar Funds and (iii) the potential exercise of contractual rights to purchase (the "Rights") held by certain of the Magnetar Funds . The shares of Common Stock, Warrants, Penny Warrants and Rights are held by CW Opportunity LLC, CW Opportunity 2 LP, Longhorn Special Opportunities Fund LP, Magnetar Alpha Star Fund LLC Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Lake Credit Fund LLC, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, Magnetar Structured Credit Fund, LP; Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC and Purpose Alternative Credit Fund - T LLC (collectively, the "Magnetar Funds"). Magnetar Financial serves as the investment adviser to each of CW Opportunity LLC, CW Opportunity 2 LP, 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, Purpose Alternative Credit Fund - T LLC, and Longhorn Special Opportunities Fund LP, the general partner of Magnetar Structured Credit Fund, LP and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC, and as such, Magnetar Financial exercises voting and investment power over the securities held for the Magnetar Funds' accounts. Magnetar Capital Partners serves as the sole member and parent holding company of Magnetar Financial. Supernova Management is the general partner of Magnetar Capital Partners. The manager of Supernova Management is Mr. Snyderman.
(b)	Address or principal business office or, if none, residence: The address of the principal business office of each of Magnetar Financial, Magnetar Capital Partners, Supernova Management and Mr. Snyderman is 1603 Orrington Avenue, 13th Floor, Evanston, Illinois 60201.
(c)	Citizenship: (i) Magnetar Financial is a Delaware limited liability company; (ii) Magnetar Capital Partners is a Delaware limited partnership; (iii) Supernova Management is a Delaware limited liability company; and (iv) Mr. Snyderman is a citizen of the United States of America.
(d)	Title of class of securities: Class A common stock, par value 0.000005 per share
(e)	CUSIP No.: 21873S108
Item 4.	Ownership
(a)	Amount beneficially owned: As of May 5, 2026, each of the Reporting Persons may be deemed to beneficially own 67,972,524 shares of Common Stock. As of May 5, 2026, each of the Reporting Persons may be deemed to be the beneficial owner of 14.9% of the total number of shares of Common Stock (based upon (i) the information provided by CoreWeave, Inc. in its annual definitive proxy statement on Schedule 14A filed with the SEC on April 22, 2026, as of April 15, 2026, there were 442,969,348 shares of Common Stock outstanding and (ii) the fact that 12,054,668 of the shares of Common Stock the Reporting Persons may be deemed to beneficially own are shares that underlie warrants that are currently exercisable).
(b)	Percent of class: 14.9%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Magnetar Financial, Magnetar Capital Partners, Supernova Management and Mr. Snyderman: 0
	(ii) Shared power to vote or to direct the vote: Magnetar Financial, Magnetar Capital Partners, Supernova Management and Mr. Snyderman: 67,972,524
	(iii) Sole power to dispose or to direct the disposition of: Magnetar Financial, Magnetar Capital Partners, Supernova Management and Mr. Snyderman: 0
	(iv) Shared power to dispose or to direct the disposition of: Magnetar Financial, Magnetar Capital Partners, Supernova Management and Mr. Snyderman: 67,972,524
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. Magnetar Financial is an investment adviser registered under Section 203 of the Investment Advisors Act of 1940 and serves as the investment adviser, general partner or the manager to the Magnetar Funds. As such, Magnetar Financial exercises voting and investment power over the Magnetar Funds. Magnetar Capital Partners is the sole member and parent holding company of Magnetar Financial. Supernova Management is the general partner of Magnetar Capital Partners. The current Manager of Supernova Management is Mr. Snyderman.

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Magnetar Financial LLC

Signature:	/s/ Hayley Stein
Name/Title:	Hayley Stein, Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC, GP of Magnetar Capital Partners LP, its Sole Member
Date:	05/06/2026

Magnetar Capital Partners LP

Signature:	/s/ Hayley Stein
Name/Title:	Hayley Stein, Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC, its General Partner
Date:	05/06/2026

Supernova Management LLC

Signature:	/s/ Hayley Stein
Name/Title:	Hayley Stein, Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC
Date:	05/06/2026

David J. Snyderman

Signature:	/s/ Hayley Stein
Name/Title:	Hayley Stein, Attorney-in-fact for David J. Snyderman
Date:	05/06/2026

Exhibit Information

Exhibit 99.1. Joint Filing Agreement, by and among the Reporting Persons, dated as of April 1, 2025 (incorporated by reference to Exhibit 99.1 of the Schedule 13G filed by the Reporting Persons on April 1, 2025). Exhibit 99.2. Power of Attorney, dated as of April 1, 2025 (incorporated by reference to Exhibit 99.2 of the Schedule 13G filed by the Reporting Persons on April 1, 2025).