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Rubrik
RBRK

389 hedge funds and large institutions have $8.93B invested in Rubrik in 2025 Q2 according to their latest regulatory filings, with 135 funds opening new positions, 133 increasing their positions, 91 reducing their positions, and 46 closing their positions.

New
Increased
Maintained
Reduced
Closed

193% more first-time investments, than exits

New positions opened: 135 | Existing positions closed: 46

83% more capital invested

Capital invested by funds: $4.89B → $8.93B (+$4.04B)

64.86% more ownership

Funds ownership: 77.72% → 142.58% (+65%)

46% more repeat investments, than reductions

Existing positions increased: 133 | Existing positions reduced: 91

28% more funds holding

Funds holding: 305 → 389 (+84)

19% more funds holding in top 10

Funds holding in top 10: 16 → 19 (+3)

15% less call options, than puts

Call options by funds: $211M | Put options by funds: $249M

Holders
389
Holders Change
+84
Holders Change %
+27.54%
% of All Funds
5.12%
Holding in Top 10
19
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+18.75%
% of All Funds
0.25%
New
135
Increased
133
Reduced
91
Closed
46
Calls
$211M
Puts
$249M
Net Calls
-$38.5M
Net Calls Change
-$22.6M

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$480M
2
Vanguard Group
Vanguard Group
Pennsylvania
+$401M
3
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$159M
4
First Trust Advisors
First Trust Advisors
Illinois
+$109M
5
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$97.8M

Top Sellers

Rank Fund Capital Flow
1
BCVI
Bain Capital Venture Investors
Massachusetts
-$111M
2
PC
PointState Capital
New York
-$81.1M
3
SSA
Schonfeld Strategic Advisors
New York
-$59.4M
4
Norges Bank
Norges Bank
Norway
-$51M
5
ACM
Altimeter Capital Management
Massachusetts
-$50.7M
Name Holding Trade Value Shares
Change 		Change in
Stake
ACM
426
Aster Capital Management
United Arab Emirates
– -$93.6K -1,437 Closed
QL
427
Quarry LP
New York
– -$82K -1,345 Closed
CCM
428
Coldstream Capital Management
Washington
– -$27.7K -455 Closed
IRC
429
Investors Research Corp
Georgia
– -$18.3K -300 Closed
WT
430
Washington Trust
Rhode Island
– -$12.7K -208 Closed
CA
431
Clearstead Advisors
Ohio
– -$10.2K -167 Closed
MPWT
432
MassMutual Private Wealth & Trust
Connecticut
– -$1.77K -29 Closed
CA
433
Continuum Advisory
Idaho
– -$1.28K -21 Closed
PWA
434
Physician Wealth Advisors
Utah
– -$915 -15 Closed
SC
435
SouthState Corp
Florida
– -$549 -9 Closed
CAL
436
Capital Advisors Ltd
Ohio
– +$237 +3 New
14 15 16 17
18

RBRK Hedge Fund Activity: Q2 2025 in Review

389 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Rubrik (RBRK) for Q2 2025, worth a combined $8.93B — up 83% from $4.89B a quarter earlier.

Buyers outnumbered sellers: 135 funds opened new RBRK positions and 46 closed out — a net gain of 89 holders — while 133 added to existing stakes and 91 trimmed.

The largest buyer was BlackRock, adding an estimated $480M. The largest seller was Bain Capital Venture Investors, cutting an estimated $111M.

  • 389 institutional investors held Rubrik (RBRK) as of Q2 2025, up from 305 in Q1 2025.
  • Funds reported $8.93B of Rubrik stock for Q2 2025, up 83% quarter-over-quarter.
  • 135 funds opened new Rubrik positions in Q2 2025 and 46 closed out, a net change of +89 holders.
  • The largest Rubrik buyer in Q2 2025 was BlackRock, an estimated $480M added.
  • The largest Rubrik seller in Q2 2025 was Bain Capital Venture Investors, an estimated $111M sold.

Based on aggregated 13F filings for Q2 2025.