Tenable Holdings, Inc. (TENB) Ownership
TENB ownership summary
as of October 17, 2026- Institutions
- 109.5% of shares outstanding
- Insiders
- 1.49% of shares outstanding
- Shares outstanding
- 110.1M
- Float
- 108.5M shares available to trade
- Short interest
- 16.65% 15.6M shares short
- Days to cover
- 3.30 short interest down 14.0% vs prior month
- Institutions 109.54%
- Insiders 1.49%
TENB top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Ameriprise Financial Inc | 13.82% | 15.2M | $566.4M | +6.7M (+79.1%) | June 30, 2026 |
| 2 | BlackRock Inc | 12.27% | 13.5M | $502.7M | +16,358 (+0.1%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 9.29% | 10.2M | $380.8M | +603,124 (+6.3%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 4.54% | 5.0M | $185.9M | −351,424 (−6.6%) | June 30, 2026 |
| 5 | Arrowstreet Capital Limited Partnership | 4.00% | 4.4M | $163.9M | +674,719 (+18.1%) | June 30, 2026 |
| 6 | FMR Inc | 3.76% | 4.1M | $153.9M | +567,589 (+15.9%) | June 30, 2026 |
| 7 | State Street Corp | 2.94% | 3.2M | $120.4M | +151,480 (+4.9%) | June 30, 2026 |
| 8 | First Trust Advisors L.P. | 2.70% | 3.0M | $110.6M | +282,808 (+10.5%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.69% | 3.0M | $110.2M | +37,192 (+1.3%) | June 30, 2026 |
| 10 | Penserra Capital Management, LLC | 2.68% | 3.0M | $109.8M | −436,076 (−12.9%) | June 30, 2026 |
| 11 | Shapiro Capital Management Co Inc | 2.62% | 2.9M | $107.2M | −1.3M (−30.5%) | June 30, 2026 |
| 12 | The Goldman Sachs Group Inc | 2.22% | 2.4M | $91.0M | +466,316 (+23.5%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 2.04% | 2.3M | $83.7M | +43,370 (+2.0%) | June 30, 2026 |
| 14 | Manufacturers Life Insurance Co | 1.89% | 2.1M | $77.4M | +230,083 (+12.4%) | June 30, 2026 |
| 15 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.83% | 2.0M | $75.1M | +72,322 (+3.7%) | June 30, 2026 |
| 16 | AQR Capital Management LLC | 1.63% | 1.8M | $66.8M | +214,485 (+13.6%) | June 30, 2026 |
| 17 | Jane Street Group LLC | 1.62% | 1.8M | $66.2M | +635,568 (+55.5%) | June 30, 2026 |
| 18 | VOYA INVESTMENT MANAGEMENT LLC | 1.46% | 1.6M | $59.8M | +958,586 (+147.9%) | June 30, 2026 |
| 19 | Barclays PLC | 1.21% | 1.3M | $49.7M | −571,989 (−30.0%) | June 30, 2026 |
| 20 | Freestone Grove Partners LP | 1.05% | 1.2M | $42.9M | +1.1M (+35,208.0%) | 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 12.8M shares and 4 cut 2.6M.
TENB top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Columbia Seligman Tech & Info A | 6.56% | 7.2M | $268.9M | −305,094 (−4.0%) | August 31, 2026 |
| 2 | iShares Core S&P Small-Cap ETF | 5.96% | 6.6M | $244.0M | +1,461 (+0.0%) | September 30, 2026 |
| 3 | Vanguard MStar Total Stk Mkt Idx Invest | 3.19% | 3.5M | $130.8M | −4,739 (−0.1%) | August 31, 2026 |
| 4 | Amplify Cybersecurity ETF | 2.61% | 2.9M | $107.1M | +15,612 (+0.5%) | September 30, 2026 |
| 5 | iShares Russell 2000 ETF | 2.60% | 2.9M | $106.5M | −33,024 (−1.1%) | September 30, 2026 |
| 6 | Vanguard Information Technology ETF | 2.46% | 2.7M | $100.8M | −290,302 (−9.7%) | August 31, 2026 |
| 7 | First Trust NASDAQ Cybersecurity ETF | 2.45% | 2.7M | $100.3M | — | September 30, 2026 |
| 8 | Global X Cybersecurity ETF | 2.39% | 2.6M | $97.8M | +11,620 (+0.4%) | September 30, 2026 |
| 9 | Vanguard Small Cap Index | 2.30% | 2.5M | $94.3M | +2,052 (+0.1%) | August 31, 2026 |
| 10 | Vanguard MStar Small Cap Growth Indx Inv | 1.32% | 1.5M | $54.3M | −4,504 (−0.3%) | August 31, 2026 |
| 11 | iShares Cybersecurity and Tech ETF | 1.29% | 1.4M | $52.8M | — | September 30, 2026 |
| 12 | Vanguard Strategic Equity Inv | 1.22% | 1.3M | $50.1M | +512,287 (+61.4%) | June 30, 2026 |
| 13 | Fidelity Small Cap Index | 1.14% | 1.3M | $46.8M | +10,758 (+0.9%) | July 31, 2026 |
| 14 | Columbia Seligman Global Tech A | 1.05% | 1.2M | $43.2M | −73,418 (−5.9%) | August 31, 2026 |
| 15 | JHancock Small Cap Core NAV | 1.05% | 1.2M | $43.0M | −106,090 (−8.4%) | August 31, 2026 |
| 16 | iShares Russell 2000 Growth ETF | 0.94% | 1.0M | $38.5M | −1,312 (−0.1%) | September 30, 2026 |
| 17 | State Street SPDR Port S&P 600 Sm CpETF | 0.91% | 1.0M | $37.3M | — | September 30, 2026 |
| 18 | CT (Lux) Global Tech DU | 0.72% | 790K | $29.4M | −8,339 (−1.0%) | August 31, 2026 |
| 19 | WisdomTree Cybersecurity ETF - USD Acc | 0.70% | 769K | $28.6M | +3,296 (+0.4%) | September 30, 2026 |
| 20 | Fidelity Small Cap Growth | 0.70% | 768K | $28.6M | +768,060 (0.0%) | July 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
TENB insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-09 | Arthur W Coviello Jr | Buy | $21.50 | 12,000 | $258,000 |
| 2026-02-06 | Ro Khanna | Buy | $21.23 | — | — |
| 2026-01-30 | Ro Khanna | Buy | $22.06 | — | — |
| 2025-12-15 | A Brooke Seawell | Sell | $24.82 | 115,000 | $2.9M |
| 2025-11-21 | Ro Khanna | Buy | $26.06 | — | — |
| 2025-11-20 | Ro Khanna | Buy | $25.65 | — | — |
| 2025-10-30 | Ro Khanna | Buy | $28.84 | — | — |
| 2025-10-17 | Barron Anschutz | Sell | $29.10 | 976 | $28,402 |
| 2025-09-04 | A Brooke Seawell | Sell | $30.12 | 4,622 | $139,215 |
| 2025-09-02 | Ro Khanna | Buy | $30.49 | — | — |
| 2025-08-25 | Barron Anschutz | Sell | $30.25 | 1,261 | $38,145 |
| 2025-08-25 | Mark C Thurmond | Sell | $30.25 | 28,500 | $862,125 |
| 2025-08-25 | Stephen A Vintz | Sell | $30.25 | 29,196 | $883,179 |
| 2025-08-20 | Ro Khanna | Buy | $30.39 | — | — |
| 2025-08-13 | Ro Khanna | Buy | $30.67 | — | — |
| 2025-08-12 | Ro Khanna | Buy | $29.62 | — | — |
| 2025-08-11 | Ro Khanna | Buy | $28.58 | — | — |
| 2025-07-17 | Barron Anschutz | Sell | $33.08 | 970 | $32,088 |
| 2025-07-10 | Ro Khanna | Buy | $34.35 | — | — |
| 2025-07-01 | Ro Khanna | Buy | $33.58 | — | — |
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.
TENB shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns TENB
Institutional investors own 109.5% of Tenable's shares and insiders 1.49%. The largest holder is Ameriprise Financial Inc with 13.82% of the shares (15.2M), 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 16.65% of the float, or 3.30 days of average trading volume. The share count rose 466.5% since 2016.
Related: TENB analyst forecast, TENB key metrics. See the TENB stock overview for the latest quote and news.
TENB ownership FAQ
Who owns the most Tenable stock?
The largest shareholders of Tenable are Ameriprise Financial Inc (13.82%), BlackRock Inc (12.27%), Vanguard Portfolio Management, LLC (9.29%), Vanguard Capital Management, LLC (4.54%), Arrowstreet Capital Limited Partnership (4.00%).
What percentage of Tenable is owned by institutions?
Institutions hold 109.5% of Tenable's shares outstanding; insiders hold 1.49%.
Which funds own Tenable?
The largest fund holders of Tenable are Columbia Seligman Tech & Info A (6.56%), iShares Core S&P Small-Cap ETF (5.96%), Vanguard MStar Total Stk Mkt Idx Invest (3.19%), Amplify Cybersecurity ETF (2.61%), iShares Russell 2000 ETF (2.60%).
What is Tenable's short interest?
15.6M shares of Tenable were sold short, 16.65% of the float; at the average daily volume it would take 3.30 days to cover.
Are insiders buying or selling Tenable?
Of the latest 20 reported insider transactions in Tenable (since July 1, 2025), 13 were purchases and 7 were sales.
How many shares of Tenable are outstanding?
Tenable has 110.1M shares outstanding, of which 108.5M are in the public float.