Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in TSSI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 1.8M | $23.0M | +16.1% | 6.308% | 0.00% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 968K | $12.6M | β | 3.450% | 0.00% |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 823K | $10.7M | +150.4% | 2.931% | 0.00% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 576K | $7.5M | +6.7% | 2.050% | 0.00% |
| 5 | UBS Group AG | 522K | $6.8M | +64.8% | 1.858% | 0.00% |
| 6 | Value Aligned Research Advisors, LLC | 461K | $6.0M | 0.0% | 1.640% | 0.03% |
| 7 | STATE STREET CORP | 425K | $5.5M | +16.5% | 1.515% | 0.00% |
| 8 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 417K | $5.4M | β | 1.484% | 0.04% |
| 9 | MILLENNIUM MANAGEMENT LLC | 370K | $4.8M | -57.2% | 1.319% | 0.00% |
| 10 | LPL Financial LLC | 343K | $4.5M | +82.5% | 1.221% | 0.00% |
| 11 | MARSHALL WACE, LLP | 325K | $4.2M | β | 1.157% | 0.00% |
| 12 | Rockefeller Capital Management L.P. | 217K | $2.8M | +111.2% | 0.772% | 0.01% |
| 13 | D. E. Shaw & Co., Inc. | 186K | $2.4M | -6.2% | 0.662% | 0.00% |
| 14 | CenterBook Partners LP | 177K | $2.3M | β | 0.632% | 0.12% |
| 15 | WELLS FARGO & COMPANY/MN | 173K | $2.3M | +287.1% | 0.618% | 0.00% |
| 16 | NORTHERN TRUST CORP | 165K | $2.2M | +2.7% | 0.589% | 0.00% |
| 17 | VANGUARD FIDUCIARY TRUST CO | 160K | $2.1M | β | 0.570% | 0.00% |
| 18 | Arosa Capital Management LP | 150K | $2.0M | -25.0% | 0.534% | 0.57% |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | 131K | $1.7M | β | 0.467% | 0.00% |
| 20 | GOLDMAN SACHS GROUP INC | 124K | $1.6M | +110.5% | 0.442% | 0.00% |
| 21 | MORGAN STANLEY | 114K | $1.5M | -31.1% | 0.407% | 0.00% |
| 22 | Dupree Financial Group, LLC | 94K | $1.2M | -2.6% | 0.336% | 0.49% |
| 23 | Bank of New York Mellon Corp | 62K | $805K | +4.8% | 0.220% | 0.00% |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 61K | $794K | -4.8% | 0.217% | 0.00% |
| 25 | RENAISSANCE TECHNOLOGIES LLC | 60K | $782K | -59.2% | 0.214% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in TSSI β a direct measure of their conviction.
Filings activity in TSSI during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new TSSI position in Q1 2026
Institutions that fully closed their TSSI position in Q1 2026
7 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 107 | +20% | 35.91% | +18.96 pp | $129M | +112% |
| Q4 2025 | 89 | 7.3% | 16.95% | 38.96 pp | $61M | 70% |
| Q3 2025 | 96 | +2.1% | 55.91% | 7.76 pp | $201M | 12% |
| Q2 2025 | 94 | +49% | 63.67% | +52.37 pp | $228M | +464% |
| Q1 2025 | 63 | +34% | 11.30% | +2.54 pp | $41M | +29% |
| Q4 2024 | 47 | +4600% | 8.76% | +8.76 pp | $31M | +36549207% |
| Q3 2024 | 1 | β | 0.00% | β | $0M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying TSSI stock.
Based on Q1 2026 13F filings, institutional ownership of TSS, Inc. stands at 35.9%, held across 107 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of TSSI, with approximately 1,770,890 shares worth $0.02B as of Q1 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of TSSI, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, MILLENNIUM MANAGEMENT LLC, RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for TSSI is 76 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
38 institutions opened new positions in TSSI during Q1 2026, while 20 fully exited. 60 added to existing positions and 7 trimmed.
TSSI institutional ownership rose by 18.96 percentage points quarter-over-quarter, with a net change of +18 holders.
The top 10 institutions account for 67.4% of all reported 13F value in TSSI, and the top 25 account for 89.6%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
TSS, Inc. (TSSI) Institutional Ownership