Jane Street Group, LLC amended a Schedule 13G/A reporting ownership in Super Micro Computer, Inc. The filing states combined beneficial ownership of 56,635,790 shares, equal to 8.5% of the class using a denominator of 665,014,777 outstanding shares (which reflects 646,832,377 shares outstanding as of June 10, 2026 plus dilution from 18,182,400 shares issuable upon conversion of Depositary Shares into the issuer's 7.00% Series A Mandatory Convertible Preferred Stock). The amendment corrects a signature block error; no other changes were made.
Positive
None.
Negative
None.
Insights
Large passive position disclosed; amendment corrects signature only.
The filing lists a combined 56.6M shares (8.5%) held across Jane Street entities, with voting and dispositive power shown as shared among subsidiaries. The ownership figure includes potential dilution from 18.18M convertible-preferred-derived shares and uses an adjusted outstanding share count of June 10, 2026.
Practical implications depend on whether the convertible preferred shares convert and on any subsequent trading by the Jane Street entities; future filings will show changes in holdings.
Key Figures
Beneficial ownership:56,635,790 sharesPercent of class:8.5%Denominator used:665,014,777 shares+2 more
5 metrics
Beneficial ownership56,635,790 sharescombined Jane Street holdings reported in Schedule 13G/A
Percent of class8.5%percentage using 665,014,777-share denominator
Denominator used665,014,777 sharesadjusted outstanding shares including convertible dilution
Shares outstanding (issuer stated)646,832,377 sharesas of <date>June 10, 2026</date> per issuer 424B5 filing
Potential convertible dilution18,182,400 sharesissuable from Depositary Shares representing convertible preferred
"The reported holding includes 18,182,400 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.
Mandatory Convertible Preferred Stockfinancial
"7.00% Series A Mandatory Convertible Preferred Stock ("Convertible Preferred Stock")"
A mandatory convertible preferred stock is a type of investment that pays regular income like a preferred share but is designed to automatically turn into a set number of common shares at a future date, much like a timed coupon that becomes company ownership. It matters to investors because it combines a near-term income stream with a guaranteed future increase in the company’s share count, which can dilute existing owners and change earnings-per-share and voting balance.
Schedule 13G/Aregulatory
"This amendment is being filed to correct an error in the signature block of the original filing."
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
Beneficial Ownershipregulatory
"Amount beneficially owned: 56,635,790.00 (b) Percent of class: 8.5%"
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.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
Super Micro Computer, Inc.
(Name of Issuer)
Common Stock, $0.001 par value
(Title of Class of Securities)
86800U302
(CUSIP Number)
06/11/2026
(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
56,635,790.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
56,635,790.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
56,635,790.00
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)
8.5 %
12
Type of Reporting Person (See Instructions)
HC
Comment for Type of Reporting Person: The reported holding includes 18,182,400 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 665,014,777 outstanding shares which is based on (1) 646,832,377 shares outstanding as of June 10, 2026 as stated in the issuer's 424B5 filing on June 12, 2026; and (2) dilution of the outstanding shares due to 18,182,400 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
15,728,196.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
15,728,196.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
15,728,196.00
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)
2.4 %
12
Type of Reporting Person (See Instructions)
BD
Comment for Type of Reporting Person: The % ownership calculation uses 665,014,777 outstanding shares which is based on (1) 646,832,377 shares outstanding as of June 10, 2026 as stated in the issuer's 424B5 filing on June 12, 2026; and (2) dilution of the outstanding shares due to 18,182,400 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
40,895,776.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
40,895,776.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
40,895,776.00
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)
6.2 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: The reported holding includes 18,182,400 shares that can be acquired from Convertible Preferred Stock held by JSGT. The % ownership calculation uses 665,014,777 outstanding shares which is based on (1) 646,832,377 shares outstanding as of June 10, 2026 as stated in the issuer's 424B5 filing on June 12, 2026; and (2) dilution of the outstanding shares due to 18,182,400 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
11,818.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
11,818.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
11,818.00
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
Comment for Type of Reporting Person: The % ownership calculation uses 665,014,777 outstanding shares which is based on (1) 646,832,377 shares outstanding as of June 10, 2026 as stated in the issuer's 424B5 filing on June 12, 2026; and (2) dilution of the outstanding shares due to 18,182,400 shares that can be acquired by JSGT through the Convertible Preferred Stock.
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:
56,635,790.00
(b)
Percent of class:
8.5%
(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:
56,635,790.00
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
56,635,790.00
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
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:
06/18/2026
Jane Street Capital, LLC
Signature:
/s/ Jeremy Kahn
Name/Title:
Jeremy Kahn (Authorized Signatory)
Date:
06/18/2026
Jane Street Global Trading, LLC
Signature:
/s/ Jeremy Kahn
Name/Title:
Jeremy Kahn (Authorized Signatory)
Date:
06/18/2026
Jane Street Singapore Pte. Ltd
Signature:
/s/ Jeremy Kahn
Name/Title:
Jeremy Kahn (Authorized Signatory)
Date:
06/18/2026
Comments accompanying signature: This amendment is being filed to correct an error in the signature block of the original filing. There are no other changes to the information disclosed.
Jane Street reports beneficial ownership of 56,635,790 shares, representing 8.5% of common stock using a 665,014,777-share denominator. The calculation includes 18,182,400 shares issuable via convertible preferred interests counted as potential dilution.
Why does the filing use 665,014,777 shares as the denominator?
The denominator of 665,014,777 combines the issuer's stated 646,832,377 shares outstanding as of June 10, 2026 and adds 18,182,400 shares that Jane Street's affiliate can acquire upon conversion of depositary/convertible preferred instruments.
Which Jane Street entities hold the reported shares of SMCI?
The filing lists holdings across multiple entities: Jane Street Group, LLC, Jane Street Capital, LLC, Jane Street Global Trading, LLC, and Jane Street Singapore Pte. Ltd., with shared voting/dispositive power concentrated in JSGT and related U.S. entities.
What changed in this amendment to the Schedule 13G/A?
The amendment corrects an error in the signature block only; the filer states explicitly that there are no other changes to the information previously disclosed, so ownership amounts and calculations remain as reported.
