Super Micro Computer: Jane Street reports 3.4% stake

The reported percentages use a 671,186,870-share calculation base that includes 14,221,486 shares acquirable through convertible preferred stock.

Available on EDGAR 11/06/2026 - 04:47 PM EST Accepted by SEC EDGAR 11/06/2026 - 04:47 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Super Micro Computer, Inc. is the issuer in a Schedule 13G/A reporting beneficial ownership by Jane Street entities. Jane Street Group, LLC reported 22,895,125 shares (3.4%); Jane Street Global Trading, LLC reported 15,529,630 shares (2.3%); and Jane Street Capital, LLC reported 7,365,495 shares (1.1%). The entries for these three entities show shared voting and dispositive power. Jane Street Singapore Pte. Limited reported zero beneficial ownership, voting power, and dispositive power.

The Group and Global Trading positions each include 14,221,486 shares acquirable through depositary shares, each representing a 1/20th interest in a share of 7.00% Series A Mandatory Convertible Preferred Stock held by Global Trading. The ownership percentages use a 671,186,870-share calculation base, including 656,965,384 shares outstanding as of July 31, 2026, and the 14,221,486 acquirable shares.

Key Figures

Jane Street Group beneficial ownership: 22,895,125 shares Jane Street Global Trading beneficial ownership: 15,529,630 shares Jane Street Capital beneficial ownership: 7,365,495 shares +3 more

6 metrics

Jane Street Group beneficial ownership 22,895,125 shares Reported ownership: 3.4%

Jane Street Global Trading beneficial ownership 15,529,630 shares Reported ownership: 2.3%

Jane Street Capital beneficial ownership 7,365,495 shares Reported ownership: 1.1%

Shares acquirable through depositary shares 14,221,486 shares Through depositary shares held by Jane Street Global Trading

Ownership calculation base 671,186,870 shares Used to calculate reported ownership percentages

Shares outstanding 656,965,384 shares As of July 31, 2026

Key Terms

beneficially owned, Shared Voting Power, Shared Dispositive Power, Convertible Preferred Stock, +1 more

5 terms

beneficially owned regulatory

"Amount beneficially owned: 22,895,125.00"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Shared Voting Power regulatory

"Shared Voting Power 22,895,125.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

Shared Dispositive Power regulatory

"Shared Dispositive Power 22,895,125.00"

Convertible Preferred Stock financial

"7.00% Series A Mandatory Convertible Preferred Stock ("Convertible Preferred Stock")"

Convertible preferred stock is a special class of company shares that pays priority, usually fixed, payments to holders and can be exchanged later for a set number of common shares. It matters to investors because it combines steady income and added protection with the chance to share in a company’s upside; think of it as a hybrid between a bond that pays regularly and an option to convert into growth-oriented stock, where the conversion rules influence both potential gains and how much common shareholders’ ownership may be reduced.

Depositary Shares financial

"14,221,486 shares that can be acquired from Depositary Shares"

Depositary shares are tradable certificates that represent a fractional piece of a larger security held by a third-party bank, like owning a slice of a single big pie instead of the whole pie. They let companies issue and investors buy smaller, more affordable portions of preferred stock or other instruments; holders usually receive proportional dividends and market pricing similar to ordinary shares, but may have limited voting rights and different liquidity or tax implications, which can affect income and resale value.

FAQ

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

How many SMCI shares did Jane Street report owning?

Jane Street Group, LLC reported beneficial ownership of 22,895,125 shares, or 3.4%. Separate reporting-person entries list 15,529,630 shares (2.3%) for Jane Street Global Trading, LLC and 7,365,495 shares (1.1%) for Jane Street Capital, LLC.

How many SMCI shares can Jane Street Global Trading acquire through its preferred stock?

Jane Street Global Trading, LLC holds depositary shares from which 14,221,486 SMCI shares can be acquired. Each depositary share represents a 1/20th interest in a share of 7.00% Series A Mandatory Convertible Preferred Stock.

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

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

Super Micro Computer, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

86800U302

(CUSIP Number)

09/30/2026

(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): 86800U302

1

Names of Reporting Persons

JANE STREET GROUP, 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 22,895,125.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 22,895,125.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

22,895,125.00

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)

3.4 %

12

Type of Reporting Person (See Instructions)

HC

Comment for Type of Reporting Person: The reported holding includes 14,221,486 shares that can be acquired from Depositary Shares Each Representing a 1/20th Interest in a Share of 7.00% Series A Mandatory Convertible Preferred Stock ("Convertible Preferred Stock") held by Jane Street Global Trading, LLC (JSGT). The % ownership calculation uses 671,186,870 outstanding shares which is based on (1) 656,965,384 shares outstanding as of July 31, 2026 as stated in the issuer's 10K filing on August 13, 2026; and (2) dilution of the outstanding shares due to 14,221,486 shares that can be acquired by JSGT through the Convertible Preferred Stock.

SCHEDULE 13G

CUSIP Number(s): 86800U302

1

Names of Reporting Persons

Jane Street Capital, 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 7,365,495.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 7,365,495.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

7,365,495.00

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)

1.1 %

12

Type of Reporting Person (See Instructions)

BD

Comment for Type of Reporting Person: The % ownership calculation uses 671,186,870 outstanding shares which is based on (1) 656,965,384 shares outstanding as of July 31, 2026 as stated in the issuer's 10K filing on August 13, 2026; and (2) dilution of the outstanding shares due to 14,221,486 shares that can be acquired by JSGT through the Convertible Preferred Stock.

SCHEDULE 13G

CUSIP Number(s): 86800U302

1

Names of Reporting Persons

Jane Street Global Trading, 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 15,529,630.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 15,529,630.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

15,529,630.00

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)

2.3 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: The reported holding includes 14,221,486 shares that can be acquired from Depositary Shares Each Representing a 1/20th Interest in a Share of 7.00% Series A Mandatory Convertible Preferred Stock ("Convertible Preferred Stock") held by Jane Street Global Trading, LLC (JSGT). The % ownership calculation uses 671,186,870 outstanding shares which is based on (1) 656,965,384 shares outstanding as of July 31, 2026 as stated in the issuer's 10K filing on August 13, 2026; and (2) dilution of the outstanding shares due to 14,221,486 shares that can be acquired by JSGT through the Convertible Preferred Stock.

SCHEDULE 13G

CUSIP Number(s): 86800U302

1

Names of Reporting Persons

Jane Street Singapore Pte. Ltd

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

SINGAPORE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Super Micro Computer, Inc.
(b)	Address of issuer's principal executive offices: 980 ROCK AVENUE, 980 ROCK AVENUE, SAN JOSE, CALIFORNIA, 95131.
Item 2.
(a)	Name of person filing: Jane Street Group, LLC; Jane Street Capital, LLC; Jane Street Global Trading, LLC; Jane Street Singapore Pte. Limited
(b)	Address or principal business office or, if none, residence: Jane Street Group, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Capital, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Global Trading, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Singapore Pte. Limited 2 Central Boulevard, #43-01 IOI Central Boulevard Towers (West Tower) 018916, Singapore
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock, $0.001 par value
(e)	CUSIP No.: 86800U302
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 22,895,125.00
(b)	Percent of class: 3.4%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 22,895,125.00
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 22,895,125.00
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
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. Subsidiary Jane Street Capital, LLC Jane Street Global Trading, LLC Jane Street Singapore Pte. Limited
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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.

JANE STREET GROUP, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	11/06/2026

Jane Street Capital, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	11/06/2026

Jane Street Global Trading, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	11/06/2026

Jane Street Singapore Pte. Ltd

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	11/06/2026