Ticker · CUSIP 781154109

RBRK

RUBRIK INC.

Technology·Software - Infrastructure

···Share

Holders (tracked)

Combined shares

14,243,802

Combined value

$1.09B

Last close

$52.34

Quarter

2025Q4

Price is -31.6% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$52.34-9.27 (-15.05%)H $99.74 · L $43.81 · Avg Vol 3.7M

Position opened

Tracked holders · last 8 quarters

+4 vs previous quarter over the last 7.

SEC event timeline

29 events

Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+93,100 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−107,984 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) trimmed2026-02-17
−2,103,346 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−186,553 shares · 2025Q4
Position
Ron Baron (Baron Capital / BAMCO) opened position2026-02-17
+4,752 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+657,267 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+335,265 shares · 2025Q4
Position
Steve Cohen (Point72) exited2026-02-17
−314,352 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−642,531 shares · 2025Q4
Position
Wellington Management added2026-02-17
+215,127 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) added2026-02-13
+13,983 shares · 2025Q4
Position
George Soros (Soros Fund Mgmt) opened position2026-02-13
+21,971 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−84,311 shares · 2025Q4
Position
Cathie Wood (ARK Invest) added2026-02-11
+135,164 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+4,522,846 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) exited2025-12-09
−230,719 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−3,230,849 shares · 2025Q3
Position
AQR Capital Management opened position2025-11-14
+1,189,403 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−21,908 shares · 2025Q3
Position
Steve Cohen (Point72) added2025-11-14
+284,444 shares · 2025Q3
Position
Two Sigma Investments trimmed2025-11-14
−1,075,624 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+590,328 shares · 2025Q3
Position
Wellington Management opened position2025-11-14
+158,406 shares · 2025Q3
Position
George Soros (Soros Fund Mgmt) exited2025-11-14
−6,672 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−2,445,943 shares · 2025Q3
Position
Renaissance Technologies trimmed2025-11-13
−410,300 shares · 2025Q3
Position
Ray Dalio (Bridgewater Associates) opened position2025-11-13
+37,940 shares · 2025Q3
Position
Norges Bank (Norway SWF) added2025-11-12
+798,190 shares · 2024Q3
Position
Cathie Wood (ARK Invest) added2025-11-12
+55,500 shares · 2025Q3
Position

Insider activity

Last 30 days

Net (open-market)

Buys

0 · $0

Sells

0 · $0

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-14	Nithrakashyap Arvind Chief Technology Officer · Insider	A	92,834	—	$0
04-14	Choudary Kiran Kumar Chief Financial Officer · Insider	A	464,167	—	$0

View full insider history for RBRK →

Follow-the-investor returns

If you'd copied each holder of RBRK…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Cathie Wood (ARK Invest)	2024Q2	$51.06	+2.5%	$23.8M
Norges Bank (Norway SWF)	2024Q2	$52.50	-0.3%	$236.7M
George Soros (Soros Fund Mgmt)	2024Q2	$62.57	-16.3%	$1.1M
Renaissance Technologies	2024Q4	$64.11	-18.4%	$37.9M
T. Rowe Price	2024Q3	$74.72	-29.9%	$29.1M
Ron Baron (Baron Capital / BAMCO)	2025Q4	$76.48	-31.6%	$249K
Izzy Englander (Millennium Mgmt)	2024Q2	$76.55	-31.6%	$2.0M
Izzy Englander (Millennium Mgmt)	2024Q2	$76.55	-31.6%	$2.0M
Izzy Englander (Millennium Mgmt)	2024Q2	$76.55	-31.6%	$2.0M
Two Sigma Investments	2024Q2	$76.75	-31.8%	$37.5M
Steve Cohen (Point72)	2024Q3	$77.83	-32.7%	$2.1M
Steve Cohen (Point72)	2024Q3	$77.83	-32.7%	$2.1M
Ken Griffin (Citadel Advisors)	2024Q2	$78.50	-33.3%	$11.7M
Ken Griffin (Citadel Advisors)	2024Q2	$78.50	-33.3%	$11.7M
Ken Griffin (Citadel Advisors)	2024Q2	$78.50	-33.3%	$11.7M
Wellington Management	2025Q3	$78.93	-33.7%	$19.6M
D.E. Shaw & Co.	2024Q4	$80.01	-34.6%	$19.0M
D.E. Shaw & Co.	2024Q4	$80.01	-34.6%	$19.0M
D.E. Shaw & Co.	2024Q4	$80.01	-34.6%	$19.0M
Paul Tudor Jones (Tudor Investment)	2024Q4	$80.05	-34.6%	$1.9M
Paul Tudor Jones (Tudor Investment)	2024Q4	$80.05	-34.6%	$1.9M
Ray Dalio (Bridgewater Associates)	2025Q3	$80.70	-35.1%	$2.7M
AQR Capital Management	2025Q3	$82.25	-36.4%	$56.6M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions4

Norges Bank (Norway SWF)
+4,522,846
$345.9M
Paul Tudor Jones (Tudor Investment)
+93,100
$7.1M
George Soros (Soros Fund Mgmt)
+21,971
$1.7M
Ron Baron (Baron Capital / BAMCO)
+4,752
$363K

Added to5

Two Sigma Investments
+657,267
$50.3M
Izzy Englander (Millennium Mgmt)
+335,265
$25.6M
Wellington Management
+215,127
$16.5M
Cathie Wood (ARK Invest)
+135,164
$10.3M
Ray Dalio (Bridgewater Associates)
+13,983
$1.1M

Trimmed5

Ken Griffin (Citadel Advisors)
−2,103,346
$160.9M
D.E. Shaw & Co.
−186,553
$14.3M
AQR Capital Management
−107,984
$8.3M
Renaissance Technologies
−84,311
$6.4M
T. Rowe Price
−642,531
$49K

Exited1

Steve Cohen (Point72)
−314,352
$25.9M

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2024Q2	13	7,338,885	$225.0M	—
2024Q3	12	8,873,892	$285.3M	-1
2024Q4	18	12,686,441	$829.2M	+6
2025Q1	17	9,226,832	$562.7M	-1
2025Q2	17	13,797,386	$1.24B	—
2025Q3	19	10,644,704	$875.5M	+2
2025Q4	23	14,243,802	$1.09B	+4

Who owns RBRK

23 super-investors · 2025Q4

Tracked stake

14.24M

Combined value

$1.09B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New5Added7Trim9Sold2

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Norges Bank Norway SWF	4.52M	$346M	0.0%	New+4.52M
2	Ken Griffin Citadel Advisors	1.92M	$147M	0.0%	Trim−2.10M
3	Izzy Englander Millennium Mgmt	1.22M	$93M	0.0%	Added+335.3K
4	AQR Capital Management	1.08M	$83M	0.0%	Trim−108.0K
5	D.E. Shaw & Co.	905.5K	$69M	0.0%	Trim−186.6K
6	Renaissance Technologies	723.4K	$55M	0.1%	Trim−84.3K
7	Two Sigma Investments	716.3K	$55M	0.1%	Added+657.3K
8	Ken Griffin Citadel Advisors	575.9K	$44M	0.0%	Trim−2.10M
9	T. Rowe Price	556.4K	$43M	0.0%	Trim−642.5K
10	Cathie Wood ARK Invest	454.3K	$35M	0.2%	Added+135.2K
11	Wellington Management	373.5K	$29M	0.0%	Added+215.1K
12	D.E. Shaw & Co.	362.8K	$28M	0.0%	Trim−186.6K
13	D.E. Shaw & Co.	256.6K	$20M	0.0%	Trim−186.6K
14	Ken Griffin Citadel Advisors	222.7K	$17M	0.0%	Trim−2.10M
15	Izzy Englander Millennium Mgmt	86.8K	$7M	0.0%	Added+335.3K
16	Paul Tudor Jones Tudor Investment	56.7K	$4M	0.0%	New+93.1K
17	Ray Dalio Bridgewater Associates	51.9K	$4M	0.0%	Added+14.0K
18	Steve Cohen Point72	39.2K	$3M	0.0%	Sold−314.4K
19	Izzy Englander Millennium Mgmt	38.1K	$3M	0.0%	Added+335.3K
20	Paul Tudor Jones Tudor Investment	36.4K	$3M	0.0%	New+93.1K
21	Steve Cohen Point72	23.3K	$2M	0.0%	Sold−314.4K
22	George Soros Soros Fund Mgmt	22.0K	$2M	0.0%	New+22.0K
23	Ron Baron Baron Capital / BAMCO	4.8K	$363K	0.0%	New+4.8K	—

Recent moves

20 transactions

NEWPaul Tudor Jones (Tudor Investment)
+93,100 · 2025Q4
ADDTwo Sigma Investments
+657,267 · 2025Q4
NEWRon Baron (Baron Capital / BAMCO)
+4,752 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+335,265 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−2,103,346 · 2025Q4
TRIMAQR Capital Management
−107,984 · 2025Q4
SOLDSteve Cohen (Point72)
−314,352 · 2025Q4
TRIMD.E. Shaw & Co.
−186,553 · 2025Q4
TRIMT. Rowe Price
−642,531 · 2025Q4
ADDWellington Management
+215,127 · 2025Q4
NEWGeorge Soros (Soros Fund Mgmt)
+21,971 · 2025Q4
ADDRay Dalio (Bridgewater Associates)
+13,983 · 2025Q4
TRIMRenaissance Technologies
−84,311 · 2025Q4
ADDCathie Wood (ARK Invest)
+135,164 · 2025Q4
NEWNorges Bank (Norway SWF)
+4,522,846 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−230,719 · 2025Q3
ADDSteve Cohen (Point72)
+284,444 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−21,908 · 2025Q3
TRIMTwo Sigma Investments
−1,075,624 · 2025Q3
TRIMD.E. Shaw & Co.
−3,230,849 · 2025Q3

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