TSSI · NASDAQ · Information Technology Services

TSS (TSSI)

Integrates AI/HPC data-center racks while procuring equipment and maintaining mission-critical facilities.

$7.90
Pre-market+0.08 (+1.02%)
At close$7.82(−0.51%)

Breakdown13F · 13D/G · Form 4

Institutions116 holders · as of Mar 31, 2026 · largest filers plus last quarter's tail≈ 35.10%9.85M shares
Insiders10 holders · as of Jun 30, 202618.22%5.12M shares
Otherremainder≈ 46.68%13.10M shares

28.07M company shares as of Aug 21, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
Peter H. WoodwardInsiderdirector
7.54%2.12MForm 4filed Jun 2, 2026
BlackRock, Inc.Institution
6.31%1.77M13Fas of Mar 31, 2026
Larry C. Ii HeatonInsiderdirector, officer: CEO
4.45%1.25MForm 4filed May 8, 2026
Vanguard Capital Management LLCInstitution
3.45%968,44013Fas of Mar 31, 2026
Jane Street Group, LLCInstitution
2.34%658,08113Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution
2.05%575,60913Fas of Mar 31, 2026
UBS Group AGInstitution
1.86%521,59813Fas of Mar 31, 2026
Value Aligned Research Advisors, LLCInstitution
1.64%460,51013Fas of Mar 31, 2026
Darryll E. DewanInsiderofficer: Chief Executive Officer
1.64%459,471Form 4filed May 8, 2026
State Street CorpInstitution
1.51%425,25413Fas of Mar 31, 2026
Silvercrest Asset Management Group LLCInstitution
1.48%416,51413Fas of Mar 31, 2026
Karl Todd MarrottInsiderofficer: Chief Operating Officer
1.44%403,447Form 4filed Jun 30, 2026
Millennium Management LLCInstitution
1.32%370,37913Fas of Mar 31, 2026
LPL Financial LLCInstitution
1.22%342,84813Fas of Mar 31, 2026
Daniel M. ChismInsiderofficer: Chief Financial Officer
1.20%338,215Form 4filed Apr 16, 2026
Marshall Wace, LLPInstitution
1.16%324,96213Fas of Mar 31, 2026
Kieran BrennanInsiderofficer: Senior Vice President
0.97%271,333Form 4filed Jun 2, 2026
Rockefeller Capital Management L.P.Institution
0.77%216,88313Fas of Mar 31, 2026
D. E. Shaw & Co., Inc.Institution
0.66%185,90113Fas of Mar 31, 2026
Centerbook Partners LPInstitution
0.63%177,41413Fas of Mar 31, 2026
Wells Fargo & Company/MNInstitution
0.62%173,47213Fas of Mar 31, 2026
Northern Trust CorpInstitution
0.59%165,35113Fas of Mar 31, 2026
Vanguard Fiduciary Trust CoInstitution
0.57%159,97713Fas of Mar 31, 2026
Richard M. MetzlerInsiderdirector
0.55%153,784Form 4filed Jan 16, 2026
Arosa Capital Management LPInstitution
0.53%150,00013Fas of Mar 31, 2026

13F — a manager's quarterly holdings · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

116 holders · 9.85M shares · 38 new positions · 76 increased · 20 reduced · 18 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.1.77M6.31%+245.8KMay 13, 2026
Vanguard Capital Management LLC968.4K3.45%+968.4KnewMay 15, 2026
Jane Street Group, LLC658.1K2.34%+417.0KMay 12, 2026
Geode Capital Management, LLC575.6K2.05%+36.3KMay 15, 2026
UBS Group AG521.6K1.86%+205.1KMay 5, 2026
Value Aligned Research Advisors, LLC460.5K1.64%0May 18, 2026
State Street Corp425.3K1.51%+60.3KMay 15, 2026
Silvercrest Asset Management Group LLC416.5K1.48%+416.5KnewMay 15, 2026

Ownership statements13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
BlackRock, Inc.5.30%1.52M13GJan 21, 2026
Jane Street Group, LLC5.20%1.47M13GJun 1, 2026

Insider tradesForm 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jun 1, 2026
Kieran Brennanofficer: Senior Vice President
Sale10,000$16.00271,333
May 29, 2026
Peter H. Woodwarddirector
Sale200,000$16.07983,521
Jun 2, 2026
Peter H. Woodwarddirector
Sale100,000$15.481,114,061
May 6, 2026
Darryll E. Dewanofficer: Chief Executive Officer
Sale50,000$17.00454,471
May 8, 2026
Larry C. Ii Heatondirector, officer: CEO
Purchase250,000$0.11001,250,000
Apr 22, 2026
Darryll E. Dewanofficer: Chief Executive Officer
Sale50,000$16.00504,471
Apr 16, 2026
Karl Todd Marrottofficer: Chief Operating Officer
Sale800$15.00290,136
Apr 17, 2026
Karl Todd Marrottofficer: Chief Operating Officer
Sale23,636$15.11251,287
Apr 14, 2026
Karl Todd Marrottofficer: Chief Operating Officer
Sale15,213$15.03274,923
Apr 14, 2026
Daniel M. Chismofficer: Chief Financial Officer
Sale25,000$15.00338,215

CongressHouse and Senate disclosures

Not reported.