Rubrik, Inc. (RBRK) Ownership
RBRK ownership summary
as of October 18, 2026- Institutions
- 79.8% of shares outstanding
- Insiders
- 2.31% of shares outstanding
- Shares outstanding
- 161.0M
- Float
- 163.3M shares available to trade
- Short interest
- 7.94% 13.1M shares short
- Days to cover
- 4.00 short interest down 14.0% vs prior month
- Institutions 79.80%
- Insiders 2.31%
- Other investors 17.90%
RBRK top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 4.82% | 10.0M | $1.12B | +1.2M (+13.3%) | June 30, 2026 |
| 2 | AQR Capital Management LLC | 4.80% | 9.9M | $1.12B | +7.7M (+348.7%) | June 30, 2026 |
| 3 | FMR Inc | 4.44% | 9.2M | $1.03B | +940,730 (+11.4%) | June 30, 2026 |
| 4 | Vanguard Portfolio Management, LLC | 4.00% | 8.3M | $933.2M | +271,772 (+3.4%) | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 3.32% | 6.9M | $774.0M | +330,132 (+5.0%) | June 30, 2026 |
| 6 | First Trust Advisors L.P. | 2.88% | 6.0M | $672.2M | +1.1M (+22.2%) | June 30, 2026 |
| 7 | NORGES BANK | 1.96% | 4.1M | $457.4M | −453,422 (−10.0%) | June 30, 2026 |
| 8 | VOYA INVESTMENT MANAGEMENT LLC | 1.93% | 4.0M | $450.2M | +268,229 (+7.2%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 1.39% | 2.9M | $323.2M | +172,391 (+6.4%) | June 30, 2026 |
| 10 | State Street Corp | 1.38% | 2.9M | $321.6M | +294,561 (+11.5%) | June 30, 2026 |
| 11 | Legal & General Group PLC | 1.26% | 2.6M | $294.5M | +796,941 (+43.7%) | June 30, 2026 |
| 12 | Pictet Asset Manangement SA | 1.14% | 2.4M | $266.2M | −957,222 (−28.8%) | June 30, 2026 |
| 13 | JPMorgan Chase & Co | 1.09% | 2.3M | $253.3M | +423,430 (+23.1%) | June 30, 2026 |
| 14 | Anatole Investment Management Ltd | 1.06% | 2.2M | $246.1M | +2.2M (0.0%) | June 30, 2026 |
| 15 | PointState Capital LP | 0.90% | 1.9M | $208.7M | −1.8M (−49.1%) | June 30, 2026 |
| 16 | UBS Asset Mgmt Americas Inc | 0.84% | 1.7M | $195.6M | +885,144 (+103.6%) | June 30, 2026 |
| 17 | ClearBridge Advisors, LLC | 0.76% | 1.6M | $177.3M | +128,839 (+8.9%) | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 0.74% | 1.5M | $173.4M | −179,538 (−10.4%) | June 30, 2026 |
| 19 | BNP Paribas Arbitrage, SA | 0.72% | 1.5M | $168.7M | +268,533 (+21.8%) | June 30, 2026 |
| 20 | Institutional Venture Management XV, LLC | 0.69% | 1.4M | $160.9M | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 15 holders added 17.0M shares and 4 cut 3.4M.
RBRK top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.29% | 4.8M | $534.1M | −12,747 (−0.3%) | August 31, 2026 |
| 2 | First Trust NASDAQ Cybersecurity ETF | 1.96% | 4.1M | $456.8M | — | September 30, 2026 |
| 3 | Vanguard Small Cap Index | 1.66% | 3.4M | $386.8M | +2,648 (+0.1%) | August 31, 2026 |
| 4 | L&G Cyber Security ETF | 1.11% | 2.3M | $258.7M | +2,011 (+0.1%) | September 30, 2026 |
| 5 | Vanguard MStar Small Cap Value Index | 1.05% | 2.2M | $245.6M | +1,732 (+0.1%) | August 31, 2026 |
| 6 | Pictet-Security I USD | 0.88% | 1.8M | $203.9M | −1.5M (−45.9%) | June 30, 2026 |
| 7 | Vanguard Information Technology ETF | 0.84% | 1.7M | $195.3M | −464,815 (−21.1%) | August 31, 2026 |
| 8 | Amplify Cybersecurity ETF | 0.68% | 1.4M | $159.2M | +7,680 (+0.5%) | September 30, 2026 |
| 9 | Vanguard Explorer Inv | 0.67% | 1.4M | $155.9M | +231,490 (+20.0%) | June 30, 2026 |
| 10 | Fidelity Growth Company Fund | 0.66% | 1.4M | $154.2M | +55,500 (+4.2%) | August 31, 2026 |
| 11 | Fidelity Select Software & IT Svcs Port | 0.64% | 1.3M | $148.5M | −90,800 (−6.4%) | August 31, 2026 |
| 12 | JPMorgan Mid Cap Growth I | 0.50% | 1.0M | $117.4M | −19,368 (−1.8%) | August 31, 2026 |
| 13 | Global X Cybersecurity ETF | 0.50% | 1.0M | $116.1M | +4,560 (+0.4%) | September 30, 2026 |
| 14 | Fidelity Select Technology | 0.49% | 1.0M | $113.5M | −245,100 (−19.5%) | August 31, 2026 |
| 15 | T. Rowe Price New Horizons | 0.38% | 797K | $89.6M | +85,856 (+12.1%) | August 31, 2026 |
| 16 | Fidelity Extended Market Index | 0.38% | 785K | $88.2M | −8,552 (−1.1%) | August 31, 2026 |
| 17 | iShares Expanded Tech-Software Sect ETF | 0.38% | 783K | $88.0M | +7,425 (+1.0%) | September 30, 2026 |
| 18 | American Funds SMALLCAP World A | 0.36% | 741K | $83.3M | −540,263 (−42.2%) | June 30, 2026 |
| 19 | Federated Hermes Kaufmann R | 0.34% | 715K | $80.4M | — | June 30, 2026 |
| 20 | iShares Digital Security ETF USD Acc | 0.34% | 701K | $78.8M | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
RBRK insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-07 | Kiran Kumar Choudary | Sell | $51.69 | 20,000 | $1.0M |
| 2026-04-01 | John Wendell Thompson | Sell | $48.90 | 11,000 | $537,900 |
| 2026-04-01 | John Wendell Thompson | Sell | $48.96 | 2,500 | $122,400 |
| 2026-03-30 | Mark D Mclaughlin | Buy | $47.21 | 10,638 | $502,220 |
| 2026-03-24 | Kiran Kumar Choudary | Sell | $48.20 | 122,613 | $5.9M |
| 2026-03-02 | John Wendell Thompson | Sell | $53.62 | 11,000 | $589,820 |
| 2026-03-02 | John Wendell Thompson | Sell | $53.55 | 2,500 | $133,875 |
| 2026-02-18 | Kiran Kumar Choudary | Sell | $54.17 | 20,000 | $1.1M |
| 2026-02-02 | John Wendell Thompson | Sell | $55.29 | 11,000 | $608,190 |
| 2026-02-02 | John Wendell Thompson | Sell | $55.30 | 2,500 | $138,250 |
| 2026-01-16 | Kiran Kumar Choudary | Sell | $67.66 | 20,000 | $1.4M |
| 2026-01-15 | Arvind Nithrakashyap | Sell | $70.40 | 4,648 | $327,219 |
| 2026-01-14 | Arvind Nithrakashyap | Sell | $70.05 | 1,045 | $73,202 |
| 2026-01-12 | Brian K Mccarthy | Sell | $70.88 | 10,000 | $708,800 |
| 2026-01-07 | Kiran Kumar Choudary | Sell | $76.20 | 3,500 | $266,700 |
| 2026-01-05 | John Wendell Thompson | Sell | $73.84 | 11,000 | $812,240 |
| 2026-01-05 | John Wendell Thompson | Sell | $73.87 | 2,500 | $184,675 |
| 2025-12-22 | Kiran Kumar Choudary | Sell | $79.25 | 3,500 | $277,375 |
| 2025-12-17 | Arvind Nithrakashyap | Sell | $76.19 | 31,450 | $2.4M |
| 2025-12-17 | Brian K Mccarthy | Sell | $76.18 | 4,797 | $365,435 |
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.
RBRK shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns RBRK
Institutional investors own 79.8% of Rubrik's shares and insiders 2.31%. The largest holder is BlackRock Inc with 4.82% of the shares (10.0M), as of June 30, 2026. Among the top 20 institutions, 15 added shares and 4 reduced their stake in the latest filings. Short interest is 7.94% of the float, or 4.00 days of average trading volume. The share count rose 12.8% since 2022.
Related: RBRK analyst forecast, RBRK key metrics. See the RBRK stock overview for the latest quote and news.
RBRK ownership FAQ
Who owns the most Rubrik stock?
The largest shareholders of Rubrik are BlackRock Inc (4.82%), AQR Capital Management LLC (4.80%), FMR Inc (4.44%), Vanguard Portfolio Management, LLC (4.00%), Vanguard Capital Management, LLC (3.32%).
What percentage of Rubrik is owned by institutions?
Institutions hold 79.8% of Rubrik's shares outstanding; insiders hold 2.31%.
Which funds own Rubrik?
The largest fund holders of Rubrik are Vanguard MStar Total Stk Mkt Idx Invest (2.29%), First Trust NASDAQ Cybersecurity ETF (1.96%), Vanguard Small Cap Index (1.66%), L&G Cyber Security ETF (1.11%), Vanguard MStar Small Cap Value Index (1.05%).
What is Rubrik's short interest?
13.1M shares of Rubrik were sold short, 7.94% of the float; at the average daily volume it would take 4.00 days to cover.
Are insiders buying or selling Rubrik?
Of the latest 20 reported insider transactions in Rubrik (since December 17, 2025), 1 were purchases and 19 were sales.
How many shares of Rubrik are outstanding?
Rubrik has 161.0M shares outstanding, of which 163.3M are in the public float.