RUBRIK INC. RBRK
CL A · Common Stock · CUSIP 781154109 · ISIN US7811541090
Zero trust data security and cloud data management for Enterprise companies
- SectorTechnology
- IndustryServices-Prepackaged Software
- HeadquartersPalo Alto, CA
- Founded2013
- Websiterubrik.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($39.2m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $79.77. Options: 29 managers hold calls ($515.4m notional), 21 hold puts ($325.9m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q2 2024 | 136 |
| Q3 2024 | 170 |
| Q4 2024 | 253 |
| Q1 2025 | 307 |
| Q2 2025 | 391 |
| Q3 2025 | 437 |
| Q4 2025 | 473 |
| Q1 2026 | 465 |
| Q2 2026 | 574 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 124 | 55 |
| Q4 2024 | 173 | 77 |
| Q1 2025 | 210 | 99 |
| Q2 2025 | 266 | 139 |
| Q3 2025 | 303 | 160 |
| Q4 2025 | 274 | 202 |
| Q1 2026 | 289 | 225 |
| Q2 2026 | 399 | 187 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $403.1m | $426.0m | 1.06 |
| Q4 2025 | $474.3m | $320.2m | 0.68 |
| Q1 2026 | $264.1m | $249.4m | 0.94 |
| Q2 2026 | $515.4m | $325.9m | 0.63 |
Biggest buyers
| AQR CAPITAL MANAGEMENT LLC | Added | +7.7m |
| Anatole Investment Management Ltd | New | +2.2m |
| BlackRock, Inc. | Added | +1.2m |
| FIRST TRUST ADVISORS LP | Added | +1.1m |
| FMR LLC | Added | +940.7k |
| WESTFIELD CAPITAL MANAGEMENT CO LP | New | +937.3k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Added | +885.1k |
| BAMCO INC /NY/ | Added | +837.9k |
| Legal & General Group Plc | Added | +796.9k |
| Driehaus Capital Management LLC | New | +492.2k |
Biggest sellers
| PointState Capital LP | Reduced | -1.8m |
| TWO SIGMA INVESTMENTS, LP | Reduced | -1.8m |
| Greenvale Capital LLP | Sold out | -1.0m |
| Pictet Asset Management Holding SA | Reduced | -957.2k |
| Champlain Investment Partners, LLC | Reduced | -803.6k |
| Qube Research & Technologies Ltd | Sold out | -733.4k |
| CITADEL ADVISORS LLC | Sold out | -731.2k |
| SG Americas Securities, LLC | Reduced | -728.4k |
| UBS Group AG | Reduced | -700.2k |
| Capital World Investors | Sold out | -663.7k |
Biggest calls
| JANE STREET GROUP, LLC | Added | $146.7m1.8m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $96.3m1.2m shares |
| IMC-Chicago, LLC | Added | $71.0m885.0k shares |
| CITADEL ADVISORS LLC | Added | $56.7m706.6k shares |
| SG Americas Securities, LLC | Reduced | $39.8m1.2m shares |
| D. E. Shaw & Co., Inc. | Added | $18.2m226.1k shares |
| GOLDMAN SACHS GROUP INC | New | $17.1m212.4k shares |
| GROUP ONE TRADING LLC | Added | $14.4m179.2k shares |
| Walleye Trading LLC | Added | $12.6m157.4k shares |
| SIMPLEX TRADING, LLC | Added | $10.2m126.6k shares |
Biggest puts
| JANE STREET GROUP, LLC | Reduced | $94.3m1.2m shares |
| SG Americas Securities, LLC | Unchanged | $73.4m1.2m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $43.0m536.1k shares |
| CITADEL ADVISORS LLC | Added | $30.4m378.9k shares |
| IMC-Chicago, LLC | Added | $24.1m300.6k shares |
| D. E. Shaw & Co., Inc. | Added | $16.2m202.3k shares |
| WOLVERINE ASSET MANAGEMENT LLC | Added | $9.3m115.3k shares |
| GROUP ONE TRADING LLC | Added | $7.7m95.7k shares |
| SIMPLEX TRADING, LLC | Added | $6.2m77.0k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $5.6m69.3k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Nithrakashyap Arvind 13G · exempt (held before listing) new · filed 2025-02-14 | 11.5% |
| Sinha Bipul 13D · may seek influence -1.0 pts · filed 2025-09-12 | 8.9% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-08-13 | 6.2% |
| FMR LLC 13G · institution new · filed 2026-05-06 | 5.3% |
| BlackRock, Inc. 13G · institution new · filed 2026-04-27 | 5.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.1% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.0% |
Fell to 5% or below in the last year: Lightspeed Venture Partners IX, L.P. (2.0%, 2026-08-14), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 3 | $98.3m | $14.9m |
| Q1 2025 | 0 | — | 5 | $60.2m | $29.0m |
| Q2 2025 | 0 | — | 7 | $116.7m | $43.8m |
| Q3 2025 | 0 | — | 6 | $59.0m | $9.1m |
| Q4 2025 | 0 | — | 5 | $9.9m | $6.2m |
| Q1 2026 | 1 | $502.2k | 4 | $13.6m | $6.3m |
| Q2 2026 | 0 | — | 5 | $23.1m | $22.8m |
| Q3 2026 | 0 | — | 5 | $18.0m | $17.7m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-17 | Choudary Kiran Kumar Chief Financial Officer | Sold plan | $643.9k6.0k shares |
| 2026-09-15 | Choudary Kiran Kumar Chief Financial Officer | Sold plan | $404.2k4.0k shares |
| 2026-09-10 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.2m12.8k shares |
| 2026-09-09 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.2m12.8k shares |
| 2026-09-08 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.2m12.8k shares |
| 2026-09-03 | Wassenaar Yvonne Director | Sold plan | $64.5k721 shares |
| 2026-09-01 | THOMPSON JOHN WENDELL Director | Sold plan | $979.3k11.0k shares |
| 2026-09-01 | THOMPSON JOHN WENDELL Director · By John and Sandra Thompson Trust | Sold plan | $222.6k2.5k shares |
| 2026-08-24 | Choudary Kiran Kumar Chief Financial Officer | Sold plan | $983.2k10.0k shares |
| 2026-08-05 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.1m12.8k shares |
| 2026-08-04 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.0m12.8k shares |
| 2026-08-03 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $949.2k12.8k shares |
| 2026-08-03 | THOMPSON JOHN WENDELL Director | Sold plan | $815.1k11.0k shares |
| 2026-08-03 | THOMPSON JOHN WENDELL Director · By John and Sandra Thompson Trust | Sold plan | $185.3k2.5k shares |
| 2026-08-03 | Wassenaar Yvonne Director | Sold plan | $54.1k721 shares |
| 2026-07-15 | Choudary Kiran Kumar Chief Financial Officer | Sold plan | $2.3m28.0k shares |
| 2026-07-13 | Mhatre Ravi Director · By Lightspeed Management Company, L.L.C. | Sold | $330.7k4.0k shares |
| 2026-07-08 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.1m12.8k shares |
| 2026-07-07 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.1m12.8k shares |
| 2026-07-06 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.1m12.8k shares |
| 2026-07-01 | THOMPSON JOHN WENDELL Director | Sold plan | $909.2k11.0k shares |
| 2026-07-01 | THOMPSON JOHN WENDELL Director · By John and Sandra Thompson Trust | Sold plan | $206.9k2.5k shares |
| 2026-07-01 | Wassenaar Yvonne Director | Sold plan | $58.8k721 shares |
| 2026-06-26 | Mhatre Ravi Director · By Lightspeed Management Company, L.L.C. | Sold | $284.5k4.0k shares |
| 2026-06-23 | Wassenaar Yvonne Director | Sold plan | $50.7k676 shares |
| 2026-06-03 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.0m12.8k shares |
| 2026-06-03 | Wassenaar Yvonne Director | Sold plan | $58.2k721 shares |
| 2026-06-02 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $1.1m12.8k shares |
| 2026-06-01 | Nithrakashyap Arvind Chief Technology Officer, director | Sold plan | $16.8m199.4k shares |
| 2026-06-01 | THOMPSON JOHN WENDELL Director | Sold plan | $930.0k11.0k shares |
The latest 30 of 37 trades.
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 10.0m $802.0m | Added +1.2m |
| AQR CAPITAL MANAGEMENT LLC 0.27% of their portfolio | 9.9m $780.1m | Added +7.7m |
| FMR LLC 0.03% of their portfolio | 9.2m $738.7m | Added +940.7k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.03% of their portfolio | 8.3m $666.4m | Added +271.8k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 6.9m $552.7m | Added +330.1k |
| FIRST TRUST ADVISORS LP 0.28% of their portfolio | 6.0m $480.1m | Added +1.1m |
| NORGES BANK 0.03% of their portfolio | 4.1m $326.7m | Not comparable |
| VOYA INVESTMENT MANAGEMENT LLC 0.28% of their portfolio | 4.0m $321.5m | Added +268.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.9m $230.9m | Added +172.4k |
| STATE STREET CORP 0.01% of their portfolio | 2.9m $229.7m | Added +294.6k |
| Legal & General Group Plc 0.04% of their portfolio | 2.6m $210.4m | Added +796.9k |
| Pictet Asset Management Holding SA 0.18% of their portfolio | 2.4m $189.9m | Reduced -957.2k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 2.3m $173.0m | Added +423.4k |
| Anatole Investment Management Ltd 29.80% of their portfolio | 2.2m $175.8m | New |
| PointState Capital LP 2.62% of their portfolio | 1.9m $149.0m | Reduced -1.8m |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.03% of their portfolio | 1.7m $139.7m | Added +885.1k |
| Clearbridge Investments, LLC 0.10% of their portfolio | 1.6m $126.6m | Added +128.8k |
| MORGAN STANLEY 0.01% of their portfolio | 1.5m $123.8m | Reduced -179.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.06% of their portfolio | 1.5m $120.5m | Added +268.5k |
| INSTITUTIONAL VENTURE MANAGEMENT XV, LLC 94.56% of their portfolio | 1.4m $114.9m | Unchanged |
| Penserra Capital Management LLC 0.85% of their portfolio | 1.4m $110.8m | Reduced -159.2k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 1.3m $106.3m | Added +302.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.3m $105.8m | Added +161.2k |
| FEDERATED HERMES, INC. 0.15% of their portfolio | 1.3m $105.7m | Reduced -524 |
| UBS Group AG 0.02% of their portfolio | 1.3m $100.7m | Reduced -700.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 1.2m $93.8m | Added +280.6k |
| BAMCO INC /NY/ 0.13% of their portfolio | 1.1m $89.5m | Added +837.9k |
| VANGUARD FIDUCIARY TRUST CO 0.02% of their portfolio | 1.0m $82.2m | Added +74.9k |
| ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio | 985.6k $48.3m | Added +113.0k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.25% of their portfolio | 937.3k $75.2m | New |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 922.0k $74.0m | Added +193.5k |
| IEQ CAPITAL, LLC 0.34% of their portfolio | 913.4k $73.3m | Added +223.5k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 868.4k $69.7m | Added +113.2k |
| BARCLAYS PLC 0.02% of their portfolio | 786.5k $63.1m | Added +328.9k |
| Amundi 0.01% of their portfolio | 775.1k $62.2m | Added +213.7k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.07% of their portfolio | 772.1k $61.9m | Added +48.7k |
| Stephens Investment Management Group LLC 0.66% of their portfolio | 768.7k $61.7m | Added +69.3k |
| Capital International Investors 0.01% of their portfolio | 762.5k $61.2m | Added +144.3k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 731.7k $58.7m | Added +240.1k |
| Fiera Capital Corp 0.20% of their portfolio | 698.9k $56.1m | Reduced -99.0k |
| Squarepoint Ops LLC 0.10% of their portfolio | 647.3k $52.0m | Reduced -169.7k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 637.3k $51.2m | Reduced -543.7k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 616.0k $49.5m | Added +58.5k |
| TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio | 561.0k $45.0m | Reduced -1.8m |
| Assenagon Asset Management S.A. 0.03% of their portfolio | 560.9k $45.0m | Added +308.5k |
| CONGRESS ASSET MANAGEMENT CO 0.27% of their portfolio | 539.7k $43.3m | Reduced -6.0k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 526.4k $42.3m | Added +151.1k |
| Holocene Advisors, LP 0.10% of their portfolio | 525.0k $42.1m | Reduced -30.7k |
| RENAISSANCE TECHNOLOGIES LLC 0.06% of their portfolio | 509.2k $40.9m | Added +131.7k |
| Driehaus Capital Management LLC 0.23% of their portfolio | 492.2k $39.5m | New |
| Champlain Investment Partners, LLC 0.94% of their portfolio | 456.3k $36.6m | Reduced -803.6k |
| Abu Dhabi Investment Council Co P.J.S.C 5.00% of their portfolio | 445.3k $35.8m | Added +77.1k |
| SG Americas Securities, LLC 0.02% of their portfolio | 442.9k $35.6m | Reduced -728.4k |
| Nuveen, LLC 0.01% of their portfolio | 420.2k $33.7m | Added +47.9k |
| Beacon Pointe Advisors, LLC 0.15% of their portfolio | 391.8k $31.5m | Reduced -276 |
| BAILLIE GIFFORD & CO 0.03% of their portfolio | 388.0k $31.2m | Added +222.9k |
| BANK OF NOVA SCOTIA 0.05% of their portfolio | 379.0k $30.4m | Reduced -347.7k |
| ARK Investment Management LLC 0.19% of their portfolio | 365.4k $29.3m | Reduced -29.6k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 352.7k $28.3m | Added +340.6k |
| CI INVESTMENTS INC. 0.09% of their portfolio | 343.4k $27.6m | Reduced -61.3k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.02% of their portfolio | 331.2k $26.6m | Reduced -574.5k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.03% of their portfolio | 324.8k $26.1m | Added +97.8k |
| Mariner, LLC 0.03% of their portfolio | 317.8k $25.5m | Added +263.8k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 316.1k $25.4m | Added +217.1k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.03% of their portfolio | 312.1k $25.1m | Added +117.3k |
| Swiss National Bank 0.01% of their portfolio | 306.8k $24.6m | Added +14.7k |
| FIL Ltd 0.02% of their portfolio | 292.5k $23.5m | Added +11.7k |
| Sumitomo Mitsui Trust Group, Inc. 0.01% of their portfolio | 282.2k $22.7m | Reduced -29.0k |
| Amova Asset Management Americas, Inc. 0.29% of their portfolio | 281.2k $22.6m | Reduced -30.0k |
| Connor, Clark & Lunn Investment Management Ltd. 0.04% of their portfolio | 274.6k $22.0m | Added +92.3k |
| Walleye Capital LLC 0.09% of their portfolio | 248.6k $20.0m | Added +159.7k |
| Freestone Grove Partners LP 0.13% of their portfolio | 243.7k $19.6m | Unchanged |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.03% of their portfolio | 241.8k $19.4m | Reduced -170.4k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.05% of their portfolio | 237.7k $19.1m | New |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 230.5k $18.5m | Reduced -15.5k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 222.3k $17.8m | Reduced -12.2k |
| EVENTIDE ASSET MANAGEMENT, LLC 0.23% of their portfolio | 216.4k $17.4m | Added +204.8k |
| ING GROEP NV 0.08% of their portfolio | 204.6k $16.4m | Reduced -129.5k |
| Octahedron Capital Management L.P. 8.34% of their portfolio | 203.0k $16.3m | Added +92.0k |
| STIFEL FINANCIAL CORP 0.01% of their portfolio | 202.5k $16.3m | Reduced -5.0k |
| Cerity Partners LLC 0.02% of their portfolio | 193.9k $15.6m | Added +173.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 190.8k $15.3m | Added +56.3k |
| CITIGROUP INC 0.01% of their portfolio | 184.4k $14.8m | Reduced -159.7k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 184.1k $14.8m | Added +11.8k |
| California Public Employees Retirement System 0.01% of their portfolio | 177.3k $14.2m | Added +1.4k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.03% of their portfolio | 169.0k $13.6m | Reduced -10.1k |
| NATIXIS 0.06% of their portfolio | 163.7k $13.1m | Added +163.7k |
| HRT FINANCIAL LP 0.03% of their portfolio | 159.9k $12.8m | New |
| PATHWAY CAPITAL MANAGEMENT, LP 53.56% of their portfolio | 159.8k $12.8m | New |
| HighTower Advisors, LLC 0.01% of their portfolio | 157.9k $12.7m | Reduced -72.0k |
| OFI INVEST ASSET MANAGEMENT 0.11% of their portfolio | 152.5k $10.7m | New |
| VANGUARD ASSET MANAGEMENT, Ltd 0.01% of their portfolio | 148.1k $11.9m | Added +13.8k |
| MERCER GLOBAL ADVISORS INC /ADV 0.01% of their portfolio | 146.9k $11.8m | Added +102.8k |
| Corient Private Wealth LP 0.02% of their portfolio | 144.7k $11.6m | New |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 139.2k $11.2m | Added +4.7k |
| ALGERT GLOBAL LLC 0.13% of their portfolio | 138.4k $11.1m | Added +39.3k |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 131.4k $10.5m | Added +47.1k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 131.1k $10.5m | Reduced -268.6k |
| Jump Financial, LLC 0.09% of their portfolio | 129.4k $10.4m | Added +62.2k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.19% of their portfolio | 126.2k $10.1m | New |