Stock Ownership/RBRK

RUBRIK INC. (RBRK): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in RBRK · Information Technology. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
22
13F filers
Aggregate Value
$1.2B
Across holders
Last Price
$98.04
2026-08-24
Sector
Information Technology
GICS
Quarterly fund activity14 increased7 reduced6 exited
Full exits: Verition Fund Management LLC, Bridgewater Associates, LP, CITADEL ADVISORS LLC, Schonfeld Strategic Advisors LLC, FRED ALGER MANAGEMENT, LLC, Qube Research & Technologies Ltd
Institutional Holders of RBRK
↗
22 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund9.95M$780.1M65.5%0.3%Added+$780.1MQ2 2026
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund1.58M$126.6M10.6%0.1%Added+$10.3MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund647K$52.0M4.4%0.1%Reduced+$48.8MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund561K$45.0M3.8%0.0%Reduced+$44.6MQ2 2026
Holocene Advisors, LP
CIK 0001700574
Hedge Fund525K$42.1M3.5%0.1%Reduced$-2.5MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund509K$40.9M3.4%0.1%Added+$10.6MQ2 2026
BAILLIE GIFFORD & CO
CIK 0001088875
Institutional Manager388K$31.2M2.6%0.0%Added+$5.9MQ2 2026
Walleye Capital LLC
CIK 0001758720
Hedge Fund249K$20.0M1.7%0.1%Added+$17.5MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund131K$10.5M0.9%0.0%Reduced+$5.3MQ2 2026
Hudson Bay Capital Management LP
CIK 0001393825
Hedge Fund124K$10.0M0.8%0.0%Unchanged+$0Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$780.1M· 65.5% of total· 0.3% port· 9.95M sh· +$780.1M QoQ· Q2 2026
Clearbridge Investments, LLCAdded
Hedge Fund
$126.6M· 10.6% of total· 0.1% port· 1.58M sh· +$10.3M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$52.0M· 4.4% of total· 0.1% port· 647K sh· +$48.8M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$45.0M· 3.8% of total· 0.0% port· 561K sh· +$44.6M QoQ· Q2 2026
Holocene Advisors, LPReduced
Hedge Fund
$42.1M· 3.5% of total· 0.1% port· 525K sh· $-2.5M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$40.9M· 3.4% of total· 0.1% port· 509K sh· +$10.6M QoQ· Q2 2026
BAILLIE GIFFORD & COAdded
Institutional Manager
$31.2M· 2.6% of total· 0.0% port· 388K sh· +$5.9M QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$20.0M· 1.7% of total· 0.1% port· 249K sh· +$17.5M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$10.5M· 0.9% of total· 0.0% port· 131K sh· +$5.3M QoQ· Q2 2026
Hudson Bay Capital Management LPUnchanged
Hedge Fund
$10.0M· 0.8% of total· 0.0% port· 124K sh· +$0 QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$8.7M· 0.7% of total· 0.0% port· 108K sh· +$4.2M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$7.0M· 0.6% of total· 0.0% port· 87K sh· — QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$4.3M· 0.4% of total· 0.0% port· 53K sh· +$1.1M QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$3.4M· 0.3% of total· 0.0% port· 42K sh· $-23.9M QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$2.7M· 0.2% of total· 0.0% port· 33K sh· $-29.7M QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$2.6M· 0.2% of total· 0.0% port· 33K sh· $-963K QoQ· Q2 2026
PineBridge Investments, L.P.Added
Hedge Fund
$1.0M· 0.1% of total· 0.0% port· 13K sh· — QoQ· Q3 2025
Brevan Howard Capital Management LPAdded
Hedge Fund
$872K· 0.1% of total· 0.0% port· 11K sh· +$245K QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$495K· 0.0% of total· 0.0% port· 6K sh· $-85K QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCAdded
Hedge Fund
$489K· 0.0% of total· 0.0% port· 6K sh· — QoQ· Q2 2026
Alphadyne Asset Management LPAdded
Hedge Fund
$223K· 0.0% of total· 0.0% port· 3K sh· — QoQ· Q2 2026
Parallax Volatility Advisers, L.P.Added
Hedge Fund
$141K· 0.0% of total· 0.0% port· 2K sh· $-3.9M QoQ· Q2 2026
1–10 of 22
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