Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in TENB held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 13.5M | $228.3M | +5.5% | 11.785% | 0.00% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 9.6M | $162.9M | — | 8.411% | 0.01% |
| 3 | AMERIPRISE FINANCIAL INC | 8.5M | $143.8M | +29.5% | 7.421% | 0.03% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 5.3M | $90.5M | — | 4.669% | 0.00% |
| 5 | SHAPIRO CAPITAL MANAGEMENT LLC | 4.2M | $70.2M | +43.5% | 3.624% | 4.39% |
| 6 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 3.7M | $63.1M | +175.1% | 3.259% | 0.03% |
| 7 | FMR LLC | 3.6M | $60.4M | +139.9% | 3.118% | 0.00% |
| 8 | STATE STREET CORP | 3.1M | $52.2M | +2.3% | 2.694% | 0.00% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 2.9M | $49.5M | -0.0% | 2.554% | 0.00% |
| 10 | FIRST TRUST ADVISORS LP | 2.7M | $45.5M | -36.6% | 2.350% | 0.03% |
| 11 | MACKENZIE FINANCIAL CORP | 2.5M | $41.9M | -3.4% | 2.163% | 0.05% |
| 12 | MORGAN STANLEY | 2.2M | $37.3M | -19.1% | 1.927% | 0.00% |
| 13 | GOLDMAN SACHS GROUP INC | 2.0M | $33.5M | +100.4% | 1.730% | 0.00% |
| 14 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.9M | $32.9M | +6.8% | 1.699% | 0.04% |
| 15 | BARCLAYS PLC | 1.9M | $32.3M | -17.6% | 1.665% | 0.01% |
| 16 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.9M | $31.3M | +16.1% | 1.616% | 0.03% |
| 17 | JACOBS LEVY EQUITY MANAGEMENT, INC | 1.8M | $31.2M | — | 1.608% | 0.13% |
| 18 | Alyeska Investment Group, L.P. | 1.7M | $29.4M | -4.7% | 1.518% | 0.08% |
| 19 | AQR CAPITAL MANAGEMENT LLC | 1.6M | $26.8M | +179.7% | 1.381% | 0.01% |
| 20 | UBS Group AG | 1.4M | $22.9M | -56.2% | 1.183% | 0.00% |
| 21 | RENAISSANCE TECHNOLOGIES LLC | 1.3M | $21.3M | +140.8% | 1.100% | 0.03% |
| 22 | TWO SIGMA INVESTMENTS, LP | 1.3M | $21.2M | +1.7% | 1.095% | 0.02% |
| 23 | JANE STREET GROUP, LLC | 1.1M | $19.4M | +251.4% | 0.999% | 0.17% |
| 24 | SEB Asset Management AB | 1.1M | $18.9M | — | 0.977% | 0.08% |
| 25 | FEDERATED HERMES, INC. | 1.1M | $18.6M | +52.7% | 0.961% | 0.03% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in TENB — a direct measure of their conviction.
Filings activity in TENB during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 301 | +9.5% | 61.68% | 20.20 pp | $1.89B | 25% |
| Q4 2025 | 275 | 1.1% | 81.88% | 17.21 pp | $2.51B | 17% |
| Q3 2025 | 278 | +0.4% | 99.09% | 18.12 pp | $3.04B | 15% |
| Q2 2025 | 277 | 4.2% | 117.21% | +0.75 pp | $3.60B | +0.6% |
| Q1 2025 | 289 | 0.7% | 116.46% | 83.53 pp | $3.57B | 56% |
| Q4 2024 | 291 | +3.2% | 199.99% | +65.98 pp | $8.13B | +98% |
| Q3 2024 | 282 | +1.4% | 134.01% | 11.85 pp | $4.11B | 8.1% |
| Q2 2024 | 278 | — | 145.86% | — | $4.48B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| May 4, 2026 | Brown Matthew Charles | Buy | 12K | $21.54 | $258K |
Quick answers to the most common questions about buying TENB stock.
Based on Q1 2026 13F filings, institutional ownership of Tenable Holdings, Inc. stands at 61.7%, held across 301 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of TENB, with approximately 13,497,402 shares worth $0.23B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of TENB, including RENAISSANCE TECHNOLOGIES LLC, TWO SIGMA INVESTMENTS, LP, JANE STREET GROUP, LLC.
Our composite Smart Money Score for TENB is 58 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
69 institutions opened new positions in TENB during Q1 2026, while 43 fully exited. 87 added to existing positions and 141 trimmed.
TENB institutional ownership fell by 20.20 percentage points quarter-over-quarter, with a net change of +26 holders.
The top 10 institutions account for 51.0% of all reported 13F value in TENB, and the top 25 account for 73.2%.
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.
Tenable Holdings, Inc. (TENB) Institutional Ownership