RBRK · Rubrik, Inc. · Shareholders & Ownership
Every disclosed holder of RBRK in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns RBRK
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 130,147,725 | 62.78% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 35,362,672 | 17.06% |
| Remaining | 41,794,036 | 20.16% |
| Registered funds (N-PORT, not summed) | 53,112,510 | 25.62% |
Shares outstanding: 207,304,433, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of RBRK
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9,990,174 | ||
| 1.1 |
iShares Expanded Tech-Software Sector ETF
Fund
S000004355 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
824,041 | ||
| 1.2 |
iShares Russell Mid-Cap ETF
Fund
S000004338 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
636,490 | ||
| 1.3 |
iShares Russell Mid-Cap Growth ETF
Fund
S000004336 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
616,411 | ||
| 1.4 |
iShares Russell 1000 Growth ETF
Fund
S000004346 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
398,487 | ||
| 1.5 |
iShares Core S&P Total U.S. Stock Market ETF
Fund
S000004317 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
209,228 | ||
| 2 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9,947,988 | ||
| 2.1 |
AQR CAPITAL MANAGEMENT LLC
13G
CIK 1167557 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
9,948,468 | ||
| 2.2 |
AQR Long-Short Equity Fund
Fund
S000041116 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
604,325 | ||
| 2.3 |
AQR Style Premia Alternative Fund
Fund
S000042050 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
160,616 | ||
| 2.4 |
AQR Equity Market Neutral Fund
Fund
S000046740 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
151,536 | ||
| 2.5 |
AQR Large Cap Multi-Style Fund
Fund
S000040063 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
103,674 | ||
| 3 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9,202,121 | ||
| 3.1 |
Select Software and IT Services Portfolio
Fund
S000007483 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
1,933,500 | ||
| 3.2 |
Fidelity Growth Company Fund
Fund
S000007119 · Registered fund · May 31, 2026
Fidelity Mt. Vernon Street Trust, not summed
|
1,296,657 | ||
| 3.3 |
Select Technology Portfolio
Fund
S000007484 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
1,254,487 | ||
| 3.4 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
782,060 | ||
| 3.5 |
Fidelity Mid Cap Index Fund
Fund
S000033637 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
587,269 | ||
| 4 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
8,301,380 | ||
| 5 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,885,243 | ||
| 5.1 |
VANGUARD CAPITAL MANAGEMENT LLC
13G
CIK 2100119 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
8,127,004 | ||
| 6 |
FIRST TRUST ADVISORS LP
13F
CIK 1125816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,980,251 | ||
| 6.1 |
First Trust Technology AlphaDEX Fund
Fund
S000017703 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
105,934 | ||
| 6.2 |
First Trust Innovation Leaders ETF
Fund
S000071847 · Registered fund · Aug 31, 2026
First Trust Exchange-Traded Fund VIII, not summed
|
39,797 | ||
| 6.3 |
First Trust Mid Cap Growth AlphaDEX Fund
Fund
S000031804 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
34,300 | ||
| 6.4 |
First Trust Mid Cap Core AlphaDEX Fund
Fund
S000017338 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
25,660 | ||
| 6.5 |
First Trust Multi Cap Growth AlphaDEX Fund
Fund
S000017343 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
10,297 | ||
| 7 |
|
4,973,830 | ||
| 8 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
4,748,700 | ||
| 9 |
First Trust Nasdaq Cybersecurity ETF
Fund
S000050385 · Registered fund · Jun 30, 2026
First Trust Exchange-Traded Fund II, not summed
|
4,595,907 | ||
| 10 |
NORGES BANK
13F
CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,069,424 | ||
| 11 |
VOYA INVESTMENT MANAGEMENT LLC
13F
CIK 1068837 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,004,750 | ||
| 12 |
VANGUARD SMALL-CAP INDEX FUND
Fund
S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
3,430,515 | ||
| 13 |
|
3,297,558 | ||
| 13.1 |
Lightspeed Venture Partners IX, L.P.
Insider
CIK 1539061 · Jun 26, 2025
10% Owner, issuer-wide, not summed
|
67,569 | ||
| 14 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,875,284 | ||
| 15 |
|
2,861,374 | ||
| 15.1 |
State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF
Fund
S000063362 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
53,266 | ||
| 15.2 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
52,600 | ||
| 15.3 |
State Street(R) SPDR(R) S&P(R) Software & Services ETF
Fund
S000012329 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
41,187 | ||
| 15.4 |
State Street(R) SPDR(R) S&P Kensho Future Security ETF
Fund
S000059702 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
26,956 | ||
| 15.5 |
State Street(R) SPDR(R) FactSet Innovative Technology ETF
Fund
S000051577 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
8,007 | ||
| 16 |
Legal & General Group Plc
13F
CIK 764068 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,620,318 | ||
| 17 |
|
2,486,916 | ||
| 18 |
Pictet Asset Management Holding SA
13F
CIK 1993888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,368,281 | ||
| 19 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,253,594 | ||
| 20 |
VANGUARD INFORMATION TECHNOLOGY INDEX FUND
Fund
S000004452 · Registered fund · May 31, 2026
VANGUARD WORLD FUND, not summed
|
2,220,766 | ||
| 21 |
Anatole Investment Management Ltd
13F
CIK 1693745 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,189,257 | ||
| 22 |
VANGUARD SMALL-CAP VALUE INDEX FUND
Fund
S000002847 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
2,172,397 | ||
| 23 |
|
1,956,551 | ||
| 24 |
PointState Capital LP
13F
CIK 1509842 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,856,244 | ||
| 25 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,846,002 | ||
| 26 |
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
13F
CIK 861177 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,739,658 | ||
| 26.1 |
PACE Small/Medium Co Growth Equity Investments
Fund
S000002974 · Registered fund · Jul 31, 2026
PACE SELECT ADVISORS TRUST, not summed
|
24,110 | ||
| 27 |
Clearbridge Investments, LLC
13F
CIK 1348883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,577,133 | ||
| 28 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,542,643 | ||
| 28.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
182 | ||
| 29 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,500,810 | ||
| 30 |
INSTITUTIONAL VENTURE MANAGEMENT XV, LLC
13F
CIK 1640275 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,431,479 | ||
| 31 |
VANGUARD EXPLORER FUND
Fund
S000002578 · Registered fund · Jul 31, 2026
VANGUARD EXPLORER FUND, not summed
|
1,386,596 | ||
| 32 |
Penserra Capital Management LLC
13F
CIK 1593324 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,379,614 | ||
| 33 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,324,361 | ||
| 34 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,317,511 | ||
| 34.1 |
Schwab U.S. Mid-Cap ETF
Fund
S000026635 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
410,646 | ||
| 34.2 |
Schwab U.S. Large-Cap Growth ETF
Fund
S000026633 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
332,907 | ||
| 34.3 |
Schwab U.S. Large-Cap ETF
Fund
S000026632 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
161,095 | ||
| 34.4 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
98,025 | ||
| 34.5 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
91,988 | ||
| 35 |
FEDERATED HERMES, INC.
13F
CIK 1056288 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,317,203 | ||
| 36 |
Amplify Cybersecurity ETF
Fund
S000082278 · Registered fund · Jun 30, 2026
Amplify ETF Trust, not summed
|
1,285,013 | ||
| 37 |
|
1,254,839 | ||
| 38 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,168,219 | ||
| 38.1 |
T. Rowe Price New Horizons Fund, Inc.
Fund
S000002106 · Registered fund · Jun 30, 2026
T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
|
333,745 | ||
| 38.2 |
T. Rowe Price Diversified Mid-Cap Growth Fund, Inc.
Fund
S000002073 · Registered fund · Jun 30, 2026
T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC., not summed
|
146,446 | ||
| 38.3 |
T. Rowe Price Extended Equity Market Index Fund
Fund
S000002090 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
|
19,019 | ||
| 38.4 |
T. Rowe Price Mid-Cap Index Fund
Fund
S000051326 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
|
13,741 | ||
| 38.5 |
T. Rowe Price Tax-Efficient Equity Fund
Fund
S000002160 · Registered fund · May 31, 2026
T. ROWE PRICE TAX-EFFICIENT FUNDS, INC., not summed
|
2,600 | ||
| 39 |
BAMCO INC /NY/
13F
CIK 1017918 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,115,395 | ||
| 39.1 |
BARON DISCOVERY FUND
Fund
S000042178 · Registered fund · Jun 30, 2026
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND), not summed
|
509,500 | ||
| 39.2 |
BARON OPPORTUNITY FUND
Fund
S000000585 · Registered fund · Jun 30, 2026
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND), not summed
|
314,500 | ||
| 39.3 |
Baron Technology ETF
Fund
S000096485 · Registered fund · Jun 30, 2026
Baron ETF Trust, not summed
|
52,690 | ||
| 39.4 |
Baron SMID Cap ETF
Fund
S000096483 · Registered fund · Jun 30, 2026
Baron ETF Trust, not summed
|
13,382 | ||
| 40 |
JPMorgan Mid Cap Growth Fund
Fund
S000003654 · Registered fund · Jun 30, 2026
JPMorgan Trust II, not summed
|
1,067,617 | ||
| 41 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,024,282 | ||
| 42 |
ALLIANCEBERNSTEIN L.P.
13F
CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
985,632 | ||
| 42.1 |
AB Small Cap Growth Portfolio
Fund
S000010309 · Registered fund · Jun 30, 2026
AB CAP FUND, INC., not summed
|
438,363 | ||
| 42.2 |
Small Cap Core Portfolio
Fund
S000051867 · Registered fund · Jun 30, 2026
Bernstein Fund Inc, not summed
|
47,878 | ||
| 42.3 |
AB Small Cap Growth Portfolio
Fund
S000010435 · Registered fund · Jun 30, 2026
AB VARIABLE PRODUCTS SERIES FUND, INC., not summed
|
8,545 | ||
| 43 |
Choudary Kiran Kumar
Insider
CIK 2020220 · Sep 17, 2026
Chief Financial Officer, issuer-wide, not summed
|
958,078 | ||
| 44 |
WESTFIELD CAPITAL MANAGEMENT CO LP
13F
CIK 1177719 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
937,308 | ||
| 45 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
922,048 | ||
| 45.1 |
Goldman Sachs Small/Mid Cap Growth Fund
Fund
S000009322 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
|
125,459 | ||
| 45.2 |
Goldman Sachs Large Cap Growth Insights Fund
Fund
S000009328 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
31,047 | ||
| 45.3 |
Goldman Sachs MarketBeta U.S. 1000 Equity ETF
Fund
S000075322 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust II, not summed
|
4,641 | ||
| 45.4 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
1,591 | ||
| 45.5 |
Goldman Sachs MarketBeta(R) Russell 1000 Growth Equity ETF
Fund
S000083005 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
1,403 | ||
| 46 |
IEQ CAPITAL, LLC
13F
CIK 1779789 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
913,371 | ||
| 47 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
868,382 | ||
| 47.1 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
4,740 | ||
| 48 |
|
786,511 | ||
| 49 |
Amundi
13F
CIK 1330387 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
775,148 | ||
| 50 |
McCarthy Brian K.
Insider
CIK 2020217 · Jan 31, 2026
Pres.,Global Sales & Field Ops, issuer-wide, not summed
|
772,794 |
79 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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