The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query TENB owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/TENB"
Use Arkolith to show who owns TENB, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $363.0M | 15.4M | ▲+3.1% Added · +465K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $228.3M | 13.5M | ▲+5.5% Added · +701K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $162.9M | 9.6M | ▲New +9.6M sh | Q1 2026 | |
| 4 | FMR LLC | $60.4M | 3.6M | ▲+140% Added · +2.1M sh | Q1 2026 | |
| 5 | STATE STREET CORP | $52.2M | 3.1M | ▲+2.3% Added · +69K sh | Q1 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $49.5M | 2.9M | ▼~0% Reduced · −716 sh | Q1 2026 | |
| 7 | JACOBS LEVY EQUITY MANAGEMENT, INC | $31.2M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 8 | Alyeska Investment Group, L.P. | $29.4M | 1.7M | ▼−4.7% Reduced · −86K sh | Q1 2026 | |
| 9 | SEB Asset Management AB | $18.9M | 1.1M | ▲New +1.1M sh | Q1 2026 | |
| 10 | VANGUARD FIDUCIARY TRUST CO | $13.9M | 824K | ▲New +824K sh | Q1 2026 | |
| 11 | CITADEL ADVISORS LLC | $12.7M | 752K | ▲+15% Added · +99K sh | Q1 2026 | |
| 12 | Trexquant Investment LP | $12.0M | 710K | ▲+144% Added · +419K sh | Q1 2026 | |
| 13 | Stephens Investment Management Group LLC | $10.7M | 633K | ▼−42% Reduced · −467K sh | Q1 2026 | |
| 14 | IEQ CAPITAL, LLC | $8.5M | 504K | ▲+44% Added · +154K sh | Q1 2026 | |
| 15 | PINNACLE ASSOCIATES LTD | $7.1M | 417K | ▲+161% Added · +257K sh | Q1 2026 | |
| 16 | PANAGORA ASSET MANAGEMENT INC | $6.5M | 386K | ▲+319% Added · +294K sh | Q1 2026 | |
| 17 | J. Goldman & Co LP | $6.5M | 385K | ▲New +385K sh | Q1 2026 | |
| 18 | Vontobel Holding Ltd. | $5.2M | 307K | ▼−6.6% Reduced · −22K sh | Q1 2026 | |
| 19 | Vident Advisory, LLC | $5.1M | 302K | ▲+33% Added · +75K sh | Q1 2026 | |
| 20 | OP Asset Management Ltd | $4.7M | 277K | ▲New +277K sh | Q1 2026 | |
| 21 | OSSIAM | $4.5M | 264K | ▼−4.3% Reduced · −12K sh | Q1 2026 | |
| 22 | CAPITAL FUND MANAGEMENT S.A. | $3.6M | 216K | ▼−13% Reduced · −31K sh | Q1 2026 | |
| 23 | NICHOLAS COMPANY, INC. | $3.2M | 191K | ▼−0.5% Reduced · −1K sh | Q1 2026 | |
| 24 | Pathstone Holdings, LLC | $2.5M | 149K | ▲+64% Added · +58K sh | Q1 2026 | |
| 25 | Y-Intercept (Hong Kong) Ltd | $2.3M | 134K | ▼−25% Reduced · −44K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 15, 2026 | KEANE MARGARET M | Director | Option exercise (M) | 3K | $0 |
| Jun 15, 2026 | KEANE MARGARET M | Director | Option exercise (M) | 3K | $0 |
| Feb 26, 2026 | Vintz Stephen A | Co-Chief Executive Officer, Director | Grant (A) | 342K | $0 |
| Feb 26, 2026 | Thurmond Mark C. | Co-Chief Executive Officer, Director | Grant (A) | 342K | $0 |
| Feb 26, 2026 | Anschutz Barron | Insider | Grant (A) | 93K | $0 |
| Feb 26, 2026 | Brown Matthew Charles | Chief Financial Officer | Grant (A) | 142K | $0 |
| Feb 25, 2026 | Thurmond Mark C. | Co-Chief Executive Officer, Director | Option exercise (M) | 24K | $0 |
| Feb 25, 2026 | Vintz Stephen A | Co-Chief Executive Officer, Director | Option exercise (M) | 24K | $0 |
| Feb 25, 2026 | Vintz Stephen A | Co-Chief Executive Officer, Director | Option exercise (M) | 24K | $0 |
| Feb 25, 2026 | Thurmond Mark C. | Co-Chief Executive Officer, Director | Tax withholding (F) | 12K | $224K |
| Feb 25, 2026 | Thurmond Mark C. | Co-Chief Executive Officer, Director | Option exercise (M) | 24K | $0 |
| Feb 25, 2026 | Vintz Stephen A | Co-Chief Executive Officer, Director | Tax withholding (F) | 12K | $222K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 112 funds | $51.5B |
| AMAZON.COM INCAMZN | 111 funds | $42.0B |
| BROADCOM INCAVGO | 111 funds | $25.6B |
| META PLATFORMS INC-CLASS AMETA | 111 funds | $23.7B |
| ELI LILLY & COLLY | 110 funds | $12.9B |
| COSTCO WHOLESALE CORPCOST | 109 funds | $8.7B |
| NVIDIA CORPNVDA | 108 funds | $72.8B |
| ALPHABET INC-CL AGOOGL | 108 funds | $33.8B |
| SERVICENOW INCNOW | 108 funds | $3.9B |
| MASTERCARD INC - AMA | 107 funds | $10.0B |
| BOSTON SCIENTIFIC CORPBSX | 107 funds | $3.7B |
| CAPITAL ONE FINANCIAL CORPCOF | 107 funds | $2.6B |
Ranked by how many of TENB's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for TENB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.