RBRK Rubrik, Inc.

NYSE
$100.20

Rubrik, Inc. (RBRK) Institutional Ownership

What the institutions did with RBRK last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
634
filed both this quarter and last
Managers holding
563
+107 on the quarter
Buyers
397
178 opened new
Sellers
189
71 sold out entirely
Buyer share
67.8%
of managers who traded it
Breadth
+35.5
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
BlackRock, Inc. 10.0M 7.7%
AQR CAPITAL MANAGEMENT LLC 9.9M 7.6%
FMR LLC 9.2M 7.1%
VANGUARD PORTFOLIO MANAGEMENT LLC 8.3M 6.4%
VANGUARD CAPITAL MANAGEMENT LLC 6.9M 5.3%
FIRST TRUST ADVISORS LP 6.0M 4.6%
NORGES BANK 4.1M 3.1%
VOYA INVESTMENT MANAGEMENT LLC 4.0M 3.1%
GEODE CAPITAL MANAGEMENT, LLC 2.9M 2.2%
STATE STREET CORP 2.9M 2.2%
Legal & General Group Plc 2.6M 2.0%
Pictet Asset Management Holding SA 2.4M 1.8%
JPMORGAN CHASE & CO 2.3M 1.7%
Anatole Investment Management Ltd 2.2M 1.7%
PointState Capital LP 1.9M 1.4%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 1.7M 1.3%
Clearbridge Investments, LLC 1.6M 1.2%
MORGAN STANLEY 1.5M 1.2%
BNP PARIBAS FINANCIAL MARKETS 1.5M 1.2%
INSTITUTIONAL VENTURE MANAGEMENT XV, LLC 1.4M 1.1%
Penserra Capital Management LLC 1.4M 1.1%
BANK OF AMERICA CORP /DE/ 1.3M 1.0%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.3M 1.0%
FEDERATED HERMES, INC. 1.3M 1.0%
UBS Group AG 1.3M 1.0%

Largest changes

Manager Action Previous Current Change
AQR CAPITAL MANAGEMENT LLC Increased 2.2M 9.9M +7.7M
Anatole Investment Management Ltd New 0 2.2M +2.2M
PointState Capital LP Reduced 3.6M 1.9M -1.8M
TWO SIGMA INVESTMENTS, LP Reduced 2.3M 561.0K -1.8M
BlackRock, Inc. Increased 8.8M 10.0M +1.2M
FIRST TRUST ADVISORS LP Increased 4.9M 6.0M +1.1M
Greenvale Capital LLP Sold Out 1.0M 0 -1.0M
Pictet Asset Management Holding SA Reduced 3.3M 2.4M -957.2K
FMR LLC Increased 8.3M 9.2M +940.7K
WESTFIELD CAPITAL MANAGEMENT CO LP New 0 937.3K +937.3K
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Increased 854.5K 1.7M +885.1K
BAMCO INC /NY/ Increased 277.5K 1.1M +837.9K
Champlain Investment Partners, LLC Reduced 1.3M 456.3K -803.6K
Legal & General Group Plc Increased 1.8M 2.6M +796.9K
Qube Research & Technologies Ltd Sold Out 733.4K 0 -733.4K
CITADEL ADVISORS LLC Sold Out 731.2K 0 -731.2K
SG Americas Securities, LLC Reduced 1.2M 442.9K -728.4K
UBS Group AG Reduced 2.0M 1.3M -700.2K
Capital World Investors Sold Out 663.7K 0 -663.7K
BAIN CAPITAL VENTURE INVESTORS, LLC Sold Out 659.6K 0 -659.6K
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced 905.7K 331.2K -574.5K
Atreides Management, LP Sold Out 566.5K 0 -566.5K
WELLS FARGO & COMPANY/MN Reduced 1.2M 637.3K -543.7K
ALKEON CAPITAL MANAGEMENT LLC Sold Out 500.0K 0 -500.0K
Driehaus Capital Management LLC New 0 492.2K +492.2K
Trexquant Investment LP Sold Out 443.7K 0 -443.7K
JPMORGAN CHASE & CO Increased 1.8M 2.3M +423.4K
Bienville Capital Management, LLC Reduced 471.7K 121.0K -350.7K
BANK OF NOVA SCOTIA Reduced 726.7K 379.0K -347.7K
DEUTSCHE BANK AG\ Increased 12.1K 352.7K +340.6K
VANGUARD CAPITAL MANAGEMENT LLC Increased 6.6M 6.9M +330.1K
BARCLAYS PLC Increased 457.6K 786.5K +328.9K
MARSHALL WACE, LLP Reduced 363.0K 42.0K -321.0K
Assenagon Asset Management S.A. Increased 252.4K 560.9K +308.5K
BANK OF AMERICA CORP /DE/ Increased 1.0M 1.3M +302.7K
STATE STREET CORP Increased 2.6M 2.9M +294.6K
Junto Capital Management LP Sold Out 294.5K 0 -294.5K
PRICE T ROWE ASSOCIATES INC /MD/ Increased 887.6K 1.2M +280.6K
VANGUARD PORTFOLIO MANAGEMENT LLC Increased 8.0M 8.3M +271.8K
MILLENNIUM MANAGEMENT LLC Reduced 399.7K 131.1K -268.6K
BNP PARIBAS FINANCIAL MARKETS Increased 1.2M 1.5M +268.5K
VOYA INVESTMENT MANAGEMENT LLC Increased 3.7M 4.0M +268.2K
Mariner, LLC Increased 54.0K 317.8K +263.8K
WELLINGTON MANAGEMENT GROUP LLP Increased 491.7K 731.7K +240.1K
TEACHER RETIREMENT SYSTEM OF TEXAS New 0 237.7K +237.7K
Knollwood Investment Advisory, LLC Sold Out 237.4K 0 -237.4K
Voleon Capital Management LP Reduced 331.0K 107.3K -223.7K
IEQ CAPITAL, LLC Increased 689.8K 913.4K +223.5K
BAILLIE GIFFORD & CO Increased 165.1K 388.0K +222.9K
CANADA PENSION PLAN INVESTMENT BOARD Increased 99.0K 316.1K +217.1K
Amundi Increased 561.5K 775.1K +213.7K
EVENTIDE ASSET MANAGEMENT, LLC Increased 11.6K 216.4K +204.8K
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Sold Out 200.0K 0 -200.0K
GOLDMAN SACHS GROUP INC Increased 728.6K 922.0K +193.5K
Caisse de depot et placement du Quebec Reduced 194.8K 4.0K -190.8K
MORGAN STANLEY Reduced 1.7M 1.5M -179.5K
Cerity Partners LLC Increased 19.9K 193.9K +173.9K
GEODE CAPITAL MANAGEMENT, LLC Increased 2.7M 2.9M +172.4K
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Reduced 412.2K 241.8K -170.4K
HRT FINANCIAL LP New 0 169.9K +169.9K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.