Latest Period
Q1 2026
Security Snapshot
TSS, Inc. - Common Stock, $.0001 par value (TSSI) Institutional Ownership
CUSIP: 87288V101
13F Institutional Holders and Ownership History from Q3 2024 to Q1 2026
Institutions Reporting
110
Shares (Excl. Options)
9,856,817
Price
$13.01
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- Security type / class
- Equity / Common Stock, $.0001 par value
- Symbol
- TSSI on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 9,856,817
- Total 13F value
- $128,086,672
- Portfolio coverage rank
- 0%
- Share change
- +1,350,811
- Value change
- +$21,159,436
- Number of holders
- 110
- Shares outstanding
- 28,197,327
- SEC-reported price per share
- $11.58
- Insider filing price
- $11.58
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- TSSI - TSS, Inc. - Common Stock, $.0001 par value is tracked under CUSIP 87288V101.
- 110 institutions reported positions in Q1 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 89 to 110 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $60,119,813 to $128,086,672.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 110 institutions filings for Q1 2026.
Security key
87288V101
Latest holder period
Q1 2026
13F holders
110
13D/G owners
2
CIK / CUSIP context first
Open Q1 2026 holders
TSSI full holder history
TSS, Inc. SEC filings
TSS, Inc. company facts
TSS, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 87288V101:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
TSSI
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 5.3% | $10,772,410 | 1,523,485 | BlackRock, Inc. | 31 Dec 2025 | |||
| JANE STREET GROUP, LLC | 5.2% | $16,979,302 | 1,466,261 | JANE STREET GROUP, LLC | 26 May 2026 |
As of 31 Mar 2026, 110 institutional investors reported holding 9,856,817 shares of TSS, Inc. - Common Stock, $.0001 par value (TSSI). This represents 35% of the company’s total 28,197,327 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
31%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 6.3% | 1,770,890 | +16% | 0% | $23,039,278 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.4% | 968,440 | 0% | 0% | $12,599,404 |
| JANE STREET GROUP, LLC | 2.3% | 658,081 | +173% | 0.01% | $8,561,634 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 575,609 | +6.7% | 0% | $7,491,155 |
| UBS Group AG | 1.8% | 521,598 | +65% | 0% | $6,785,990 |
| Value Aligned Research Advisors, LLC | 1.6% | 460,510 | 0% | 0.07% | $5,991,235 |
| STATE STREET CORP | 1.5% | 425,254 | +17% | 0% | $5,532,555 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 1.5% | 416,514 | 0.04% | $5,418,847 | |
| MILLENNIUM MANAGEMENT LLC | 1.3% | 370,379 | -57% | 0% | $4,818,631 |
| LPL Financial LLC | 1.2% | 342,848 | +83% | 0% | $4,460,450 |
| MARSHALL WACE, LLP | 1.2% | 324,962 | 0% | $4,227,755 | |
| Rockefeller Capital Management L.P. | 0.77% | 216,883 | +111% | 0.01% | $2,821,648 |
| D. E. Shaw & Co., Inc. | 0.66% | 185,901 | +150% | 0% | $2,418,572 |
| CenterBook Partners LP | 0.63% | 177,414 | 0.12% | $2,308,156 | |
| WELLS FARGO & COMPANY/MN | 0.62% | 173,472 | +287% | 0% | $2,256,870 |
| NORTHERN TRUST CORP | 0.59% | 165,351 | +2.7% | 0% | $2,151,216 |
| VANGUARD FIDUCIARY TRUST CO | 0.57% | 159,977 | 0% | 0% | $2,081,301 |
| Arosa Capital Management LP | 0.53% | 150,000 | -25% | 1.3% | $1,951,500 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.46% | 130,988 | 0% | 0% | $1,704,154 |
| GOLDMAN SACHS GROUP INC | 0.44% | 124,020 | +110% | 0% | $1,613,501 |
| MORGAN STANLEY | 0.41% | 114,277 | -31% | 0% | $1,486,743 |
| Dupree Financial Group, LLC | 0.33% | 94,274 | -2.6% | 0.49% | $1,226,505 |
| Bank of New York Mellon Corp | 0.22% | 61,845 | +4.8% | 0% | $804,609 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.22% | 61,012 | -4.8% | 0% | $793,766 |
| RENAISSANCE TECHNOLOGIES LLC | 0.21% | 60,091 | -59% | 0% | $781,784 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
7
Latest
Q1 2026
Rows shown
1-7 of 7
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 9,856,817 | $128,086,672 | +$21,159,436 | $13.01 | 110 |
| 2025 Q4 | 8,500,574 | $60,119,813 | -$20,499,123 | $7.07 | 89 |
| 2025 Q3 | 9,406,093 | $170,378,887 | +$21,670,959 | $18.11 | 98 |
| 2025 Q2 | 7,312,086 | $210,784,907 | +$100,090,334 | $28.83 | 95 |
| 2025 Q1 | 4,772,006 | $37,473,999 | +$13,943,144 | $7.85 | 62 |
| 2024 Q4 | 2,855,906 | $33,868,439 | +$29,511,323 | $11.86 | 51 |
| 2024 Q3 | 12,000 | $86,000 | +$86,000 | $7.17 | 1 |