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TSS, Inc. is the issuer named in an amended ownership report by Jane Street Group, LLC, Jane Street Capital, LLC and Jane Street Global Trading, LLC. As of September 30, 2026, Jane Street Group reported beneficial ownership of 408,982 common shares, or 1.5%, with shared voting and dispositive power. The cover pages also list Jane Street Capital at 214,988 shares (0.8%) and Jane Street Global Trading at 193,994 shares (0.7%), each with shared voting and dispositive power.
Key Figures
Beneficial ownership:408,982 sharesPercent of class:1.5%Beneficial ownership:214,988 shares+3 more
6 metrics
Beneficial ownership408,982 sharesJane Street Group, LLC; as of September 30, 2026
Percent of class1.5%Jane Street Group, LLC; as of September 30, 2026
Beneficial ownership214,988 sharesJane Street Capital, LLC; as of September 30, 2026
Percent of class0.8%Jane Street Capital, LLC; as of September 30, 2026
Beneficial ownership193,994 sharesJane Street Global Trading, LLC; as of September 30, 2026
Percent of class0.7%Jane Street Global Trading, LLC; as of September 30, 2026
Key Terms
beneficially owned, Shared Voting Power, Shared Dispositive Power
3 terms
beneficially ownedregulatory
"Amount beneficially owned: 408,982.00"
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 Powerregulatory
"Shared Voting Power 408,982.00"
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 Powerregulatory
"Shared Dispositive Power 408,982.00"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many TSSI shares did Jane Street Group report owning?
Jane Street Group, LLC reported beneficial ownership of 408,982 TSS common shares, or 1.5%, as of September 30, 2026, with shared voting and dispositive power.
What TSSI share amounts did Jane Street Capital and Jane Street Global Trading report?
Jane Street Capital, LLC reported beneficial ownership of 214,988 shares, or 0.8%, and Jane Street Global Trading, LLC reported 193,994 shares, or 0.7%, as of September 30, 2026. Both reported shared voting and dispositive power.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
TSS, Inc.
(Name of Issuer)
Common Stock, $.0001 par value
(Title of Class of Securities)
87288V101
(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):
87288V101
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
408,982.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
408,982.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
408,982.00
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)
1.5 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
87288V101
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
214,988.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
214,988.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
214,988.00
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)
0.8 %
12
Type of Reporting Person (See Instructions)
BD
SCHEDULE 13G
CUSIP Number(s):
87288V101
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
193,994.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
193,994.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
193,994.00
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)
0.7 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
TSS, Inc.
(b)
Address of issuer's principal executive offices:
110 E. OLD SETTLERS ROAD, 110 E. OLD SETTLERS ROAD, ROUND ROCK, TEXAS, 78664.
Item 2.
(a)
Name of person filing:
Jane Street Group, LLC;
Jane Street Capital, LLC;
Jane Street Global Trading, LLC
(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
(c)
Citizenship:
See Item 4 of Cover Page
(d)
Title of class of securities:
Common Stock, $.0001 par value
(e)
CUSIP No.:
87288V101
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:
408,982.00
(b)
Percent of class:
1.5%
(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:
408,982.00
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
408,982.00
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
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.
