TSS, Inc.
TSSI- Exchange
- Nasdaq
- Industry
- Services-Management Consulting Services
- SEC CIK
- 0001320760
No open-market purchases or sales by TSS, Inc. insiders were filed in the last 90 days; 125 institutions reported holding it in 13F filings for Q2 2026, worth $161.0M in total; no superinvestor holds it.
Holders of 5% or more of TSSI
Holders whose latest Schedule 13D or 13G filing reports 5% or more of TSS, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 6.70%1.87M shares | +1.40 ppfrom 5.30% | Jan 21, 20262 filings | Jul 30, 2026 | SEC |
| Jane Street Group, LLC | 13G | 5.20%1.47M shares | New | Jun 1, 20261 filing | Jun 1, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
4 Schedule 13D and 13G filings on TSS, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 30, 202611:18 AM ET | BlackRock, Inc. | 13G/A | 6.70%1.87M shares | +1.40 ppfrom 5.30% | Jun 30, 2026 | SEC |
| Jun 1, 20264:24 PM ET | Jane Street Group, LLCand 2 others | 13G | 5.20%1.47M shares | New | May 26, 2026 | SEC |
| Jan 21, 202612:30 PM ET | BlackRock, Inc. | 13G | 5.30%1.52M shares | New | Dec 31, 2025 | SEC |
| Feb 23, 2021 | Aggarwal Lalit | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell TSS, Inc. shares.
No Form 144 notices for TSS, Inc. are on file.