TSS, Inc. (TSSI) Ownership
TSSI ownership summary
as of October 18, 2026- Institutions
- 55.3% of shares outstanding
- Insiders
- 4.79% of shares outstanding
- Shares outstanding
- 28.2M
- Float
- 21.6M shares available to trade
- Short interest
- 19.06% 4.7M shares short
- Days to cover
- 4.78 short interest down 3.1% vs prior month
- Institutions 55.35%
- Insiders 4.79%
- Other investors 39.86%
TSSI top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 8.23% | 2.3M | $16.4M | +551,400 (+31.1%) | June 30, 2026 |
| 2 | Jane Street Group LLC | 3.71% | 1.0M | $7.4M | +389,103 (+59.1%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 3.42% | 967K | $6.8M | −1,931 (−0.2%) | June 30, 2026 |
| 4 | Silvercrest Asset Management Group LLC | 2.42% | 682K | $4.8M | +265,186 (+63.7%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 2.22% | 627K | $4.4M | +51,275 (+8.9%) | June 30, 2026 |
| 6 | D. E. Shaw & Co LP | 1.92% | 543K | $3.8M | +357,012 (+192.0%) | June 30, 2026 |
| 7 | Driehaus Capital Management LLC | 1.90% | 536K | $3.8M | +536,314 (0.0%) | June 30, 2026 |
| 8 | LPL Financial Corp | 1.72% | 486K | $3.4M | +143,412 (+41.8%) | June 30, 2026 |
| 9 | State Street Corp | 1.72% | 484K | $3.4M | +59,008 (+13.9%) | June 30, 2026 |
| 10 | The Goldman Sachs Group Inc | 1.32% | 372K | $2.6M | +247,772 (+199.8%) | June 30, 2026 |
| 11 | Algert Global LLC | 1.21% | 342K | $2.4M | +331,915 (+3,164.1%) | June 30, 2026 |
| 12 | UBS Group AG | 1.04% | 294K | $2.1M | −227,726 (−43.7%) | June 30, 2026 |
| 13 | Value Aligned Research Advisors LLC | 0.93% | 261K | $1.8M | −199,012 (−43.2%) | June 30, 2026 |
| 14 | Wells Fargo & Co | 0.79% | 223K | $1.6M | +49,459 (+28.5%) | June 30, 2026 |
| 15 | Millennium Management LLC | 0.78% | 221K | $1.6M | −149,635 (−40.4%) | June 30, 2026 |
| 16 | Northern Trust Corp | 0.69% | 194K | $1.4M | +28,272 (+17.1%) | June 30, 2026 |
| 17 | AQR Capital Management LLC | 0.63% | 178K | $1.3M | +145,781 (+453.7%) | June 30, 2026 |
| 18 | Jump Financial LLC | 0.62% | 176K | $1.2M | +175,800 (0.0%) | June 30, 2026 |
| 19 | Vanguard Portfolio Management, LLC | 0.60% | 169K | $1.2M | +38,006 (+29.0%) | June 30, 2026 |
| 20 | Vanguard Fiduciary Trust Co | 0.58% | 165K | $1.2M | +4,778 (+3.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 3.4M shares and 4 cut 578K.
TSSI top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 2.51% | 708K | $5.0M | −8,192 (−1.1%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.41% | 679K | $4.8M | — | August 31, 2026 |
| 3 | Fidelity Small Cap Index | 0.95% | 267K | $1.9M | +1,709 (+0.6%) | July 31, 2026 |
| 4 | iShares Russell 2000 Growth ETF | 0.83% | 234K | $1.7M | −296 (−0.1%) | September 30, 2026 |
| 5 | BlackRock Advantage Small Cap Core Instl | 0.51% | 145K | $1.0M | −3,538 (−2.4%) | August 31, 2026 |
| 6 | Vanguard Russell 2000 ETF | 0.51% | 144K | $1.0M | +3,673 (+2.6%) | September 30, 2026 |
| 7 | North Square Dynamic Small Cap I | 0.46% | 130K | $919,651 | +3,630 (+2.9%) | June 30, 2026 |
| 8 | Fidelity Extended Market Index | 0.42% | 119K | $840,566 | +5,110 (+4.5%) | August 31, 2026 |
| 9 | iShares Micro-Cap ETF | 0.28% | 78K | $552,075 | −539 (−0.7%) | September 30, 2026 |
| 10 | DFA US Targeted Value I | 0.24% | 68K | $481,707 | +68,134 (0.0%) | August 31, 2026 |
| 11 | GuideStone Funds Small Cap Equity Instl | 0.22% | 61K | $434,268 | −27,309 (−30.8%) | September 30, 2026 |
| 12 | Schwab Small Cap Index | 0.21% | 60K | $421,280 | — | August 31, 2026 |
| 13 | Dimensional US Targeted Value ETF | 0.17% | 47K | $330,819 | — | September 30, 2026 |
| 14 | Goldman Sachs Small Cap Eq Insghts Instl | 0.16% | 46K | $326,634 | +25,048 (+118.4%) | July 31, 2026 |
| 15 | NewDeal Invest, kl n | 0.16% | 46K | $325,800 | −13,635 (−22.8%) | September 30, 2026 |
| 16 | Fidelity Total Market Index | 0.16% | 45K | $318,546 | — | August 31, 2026 |
| 17 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.16% | 45K | $316,340 | −3,133 (−6.5%) | September 30, 2026 |
| 18 | GS US Sm Cp CORE Eq Base Inc USD Snap | 0.15% | 44K | $308,499 | −40,648 (−48.2%) | July 31, 2026 |
| 19 | iShares Russell 2000 Small-Cap Idx Instl | 0.14% | 41K | $288,739 | — | August 31, 2026 |
| 20 | Fidelity Series Total Market Index | 0.13% | 36K | $256,500 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
TSSI insider transactions
latest 17| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-22 | Darryll E Dewan | Sell | $16.00 | 50,000 | $800,000 |
| 2026-04-17 | Karl Todd Marrott | Sell | $15.11 | 23,636 | $357,140 |
| 2026-04-16 | Karl Todd Marrott | Sell | $15.00 | 800 | $12,000 |
| 2026-04-14 | Daniel M Chism | Sell | $15.00 | 25,000 | $375,000 |
| 2026-04-14 | Darryll E Dewan | Sell | $15.00 | 50,000 | $750,000 |
| 2026-04-14 | Karl Todd Marrott | Sell | $15.03 | 15,213 | $228,651 |
| 2026-03-16 | Kieran Brennan | Sell | $12.27 | 12,000 | $147,240 |
| 2025-12-11 | Peter H Woodward | Sell | $8.30 | 21,700 | $180,110 |
| 2025-12-09 | Peter H Woodward | Sell | $8.82 | 30,000 | $264,600 |
| 2025-09-10 | Daniel M Chism | Sell | $16.17 | 15,000 | $242,550 |
| 2025-09-10 | Karl Todd Marrott | Sell | $16.17 | 11,100 | $179,487 |
| 2025-08-28 | Daniel M Chism | Sell | $16.20 | 5,000 | $81,000 |
| 2025-08-28 | Karl Todd Marrott | Sell | $16.16 | 23,908 | $386,353 |
| 2025-08-27 | Daniel M Chism | Sell | $16.25 | 10,000 | $162,500 |
| 2025-08-27 | Karl Todd Marrott | Sell | $16.23 | 2,917 | $47,343 |
| 2025-05-28 | Kieran Brennan | Sell | $13.50 | 5,000 | $67,500 |
| 2025-05-23 | Kieran Brennan | Sell | $13.07 | 10,000 | $130,700 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
TSSI shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns TSSI
Institutional investors own 55.3% of TSS's shares and insiders 4.79%. The largest holder is BlackRock Inc with 8.23% of the shares (2.3M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 4 reduced their stake in the latest filings. Short interest is 19.06% of the float, or 4.78 days of average trading volume. The share count rose 64.7% since 2014.
Related: TSSI analyst forecast, TSSI key metrics. See the TSSI stock overview for the latest quote and news.
TSSI ownership FAQ
Who owns the most TSS stock?
The largest shareholders of TSS are BlackRock Inc (8.23%), Jane Street Group LLC (3.71%), Vanguard Capital Management, LLC (3.42%), Silvercrest Asset Management Group LLC (2.42%), Geode Capital Management, LLC (2.22%).
What percentage of TSS is owned by institutions?
Institutions hold 55.3% of TSS's shares outstanding; insiders hold 4.79%.
Which funds own TSS?
The largest fund holders of TSS are iShares Russell 2000 ETF (2.51%), Vanguard MStar Total Stk Mkt Idx Invest (2.41%), Fidelity Small Cap Index (0.95%), iShares Russell 2000 Growth ETF (0.83%), BlackRock Advantage Small Cap Core Instl (0.51%).
What is TSS's short interest?
4.7M shares of TSS were sold short, 19.06% of the float; at the average daily volume it would take 4.78 days to cover.
Are insiders buying or selling TSS?
Of the latest 17 reported insider transactions in TSS (since May 23, 2025), 0 were purchases and 17 were sales.
How many shares of TSS are outstanding?
TSS has 28.2M shares outstanding, of which 21.6M are in the public float.