TSS, Inc. (TSSI) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

24,950,000Shares Outstanding

56,197Shares held by institutions

$446,204Value of institutional holdings

34.10%Institutional ownership %

-1.95%Shares Changed QoQ

86No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

TSS, Inc. (NASDAQ:TSSI) currently has 86 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

Tss saw its institutional ownership percentage fell to 34.1% in December 2025 from 42.4% in September 2025.
In percentage terms, this reflects as a holdings change of -1.95% quarter on quarter, and an increase of 68.63% year over year.
A review of institutional activity for Tss shows 49 of 86 filers increasing their positions, while 25 reduced their stake, and 12 remained unchanged.
This class of investors decreased its holdings in Tss to 8.51Mn shares for the 13F-cycle ending December 2025, down by 169.03K shares quarter on quarter, and up 5.67Mn shares year over year.
As of December 31, 2025, BlackRock, Inc. held Tss's largest shareholding position with over 1.53Mn shares, representing 6.11% of total outstanding shares.
Among the most significant buyers of Tss during December 2025 were MILLENNIUM MANAGEMENT LLC (389.50K), UBS Group AG (206.60K), Arosa Capital Management LP (200.00K), BlackRock, Inc. (174.52K), Dupree Financial Group, LLC (96.79K).
Leading sellers of Tss stock in December 2025 included JANE STREET GROUP, LLC (423.37K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (393.20K), CITADEL ADVISORS LLC (341.87K), RENAISSANCE TECHNOLOGIES LLC (267.93K), Nuveen, LLC (192.43K).
The top 10 institutional holders of Tss for the quarter ending December 2025 included BlackRock, Inc. (1.53Mn), VANGUARD GROUP INC (1.29Mn), MILLENNIUM MANAGEMENT LLC (865.35K), GEODE CAPITAL MANAGEMENT, LLC (539.36K), Value Aligned Research Advisors, LLC (460.51K), STATE STREET CORP (364.91K), JANE STREET GROUP, LLC (336.64K), UBS Group AG (316.46K), Arosa Capital Management LP (200.00K), LPL Financial LLC (187.82K).

86 Institutional Holders

56,197 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	1,525,050	174,518	12.92%	$10,782,104.00
VANGUARD GROUP INC	31 Dec, 2025	1,286,482	45,524	3.67%	$9,095,428.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	865,350	389,497	81.85%	$6,118,024.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	539,359	41,536	8.34%	$3,814,076.00
Value Aligned Research Advisors, LLC	31 Dec, 2025	460,510	29,247	6.78%	$3,255,806.00
STATE STREET CORP	31 Dec, 2025	364,914	-702	-0.19%	$2,579,942.00
JANE STREET GROUP, LLC	31 Dec, 2025	336,642	-423,367	-55.71%	$2,380,059.00
UBS Group AG	31 Dec, 2025	316,456	206,600	188.06%	$2,237,344.00
Arosa Capital Management LP	31 Dec, 2025	200,000	200,000	0.00%	$1,414,000.00
LPL Financial LLC	31 Dec, 2025	187,825	73,607	64.44%	$1,327,921.00
CITADEL ADVISORS LLC	31 Dec, 2025	170,182	-341,869	-66.76%	$1,203,187.00
MORGAN STANLEY	31 Dec, 2025	165,811	53,956	48.24%	$1,172,283.00
NORTHERN TRUST CORP	31 Dec, 2025	161,072	9,732	6.43%	$1,138,779.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	147,168	-267,932	-64.55%	$1,040,478.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	106,153	-393,202	-78.74%	$750,502.00
Rockefeller Capital Management L.P.	31 Dec, 2025	102,670	100	0.10%	$725,877.00
Dupree Financial Group, LLC	31 Dec, 2025	96,786	96,786	0.00%	$684,277.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	92,946	-47,234	-33.70%	$657,128.00
Point72 Asset Management, L.P.	31 Dec, 2025	86,857	86,857	0.00%	$614,079.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	74,224	44,409	148.95%	$524,764.00

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