We are live on ! Find out more
RBRK icon

Rubrik
RBRK

436 hedge funds and large institutions have $8.43B invested in Rubrik in 2025 Q3 according to their latest regulatory filings, with 132 funds opening new positions, 177 increasing their positions, 81 reducing their positions, and 81 closing their positions.

New
Increased
Maintained
Reduced
Closed

119% more repeat investments, than reductions

Existing positions increased: 177 | Existing positions reduced: 81

63% more first-time investments, than exits

New positions opened: 132 | Existing positions closed: 81

12% more funds holding

Funds holding: 389 → 436 (+47)

7% less call options, than puts

Call options by funds: $395M | Put options by funds: $426M

6% less capital invested

Capital invested by funds: $8.93B → $8.43B (-$500M)

63% less funds holding in top 10

Funds holding in top 10: 19 → 7 (-12)

70.45% less ownership

Funds ownership: 142.58% → 72.13% (-70%)

Holders
436
Holders Change
+47
Holders Change %
+12.08%
% of All Funds
5.72%
Holding in Top 10
7
Holding in Top 10 Change
-12
Holding in Top 10 Change %
-63.16%
% of All Funds
0.09%
New
132
Increased
177
Reduced
81
Closed
81
Calls
$395M
Puts
$426M
Net Calls
-$31.1M
Net Calls Change
+$7.42M

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$152M
2
PC
PointState Capital
New York
+$146M
3
Pictet Asset Management
Pictet Asset Management
Switzerland
+$112M
4
Federated Hermes
Federated Hermes
Pennsylvania
+$106M
5
AQR Capital Management
AQR Capital Management
Connecticut
+$102M

Top Sellers

Rank Fund Capital Flow
1
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$278M
2
Voloridge Investment Management
Voloridge Investment Management
Florida
-$110M
3
Two Sigma Investments
Two Sigma Investments
New York
-$92.5M
4
Teacher Retirement System of Texas
Teacher Retirement System of Texas
Texas
-$86.9M
5
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$85.9M
Name Holding Trade Value Shares
Change 		Change in
Stake
Mackenzie Financial
176
Mackenzie Financial
Ontario, Canada
$2.85M +$2.98M +34,658 New
ASRS
177
Arizona State Retirement System
Arizona
$2.84M +$583K +6,781 +24%
ETCM
178
Evolutionary Tree Capital Management
Virginia
$2.82M +$879K +10,229 +42%
EI
179
EAM Investors
California
$2.64M -$2.43M -28,217 -46%
QCM
180
Quantinno Capital Management
New York
$2.54M +$791K +9,196 +42%
OTL
181
Oak Thistle LLC
New York
$2.48M +$2.59M +30,179 New
MCM
182
Massar Capital Management
Connecticut
$2.48M +$2.59M +30,175 New
Capstone Investment Advisors
183
Capstone Investment Advisors
New York
$2.39M +$1.08M +12,578 +77%
DFCM
184
Dark Forest Capital Management
Puerto Rico
$2.38M +$1.55M +17,974 +164%
Commonwealth Equity Services
185
Commonwealth Equity Services
Massachusetts
$2.33M +$1.05M +12,229 +76%
AC
186
AlphaCore Capital
California
$2.26M -$470K -5,464 -17%
BMSSC
187
B. Metzler seel. Sohn & Co
Germany
$2.23M +$2.34M +27,172 New
GAM
188
Gotham Asset Management
New York
$2.1M +$1.56M +18,155 +245%
Handelsbanken Fonder
189
Handelsbanken Fonder
Sweden
$2.06M +$335K +3,900 +18%
Wealth Enhancement Advisory Services
190
Wealth Enhancement Advisory Services
Minnesota
$2.04M +$635K +7,391 +40%
Qube Research & Technologies (QRT)
191
Qube Research & Technologies (QRT)
United Kingdom
$2.03M -$59.2M -688,842 -97%
Vontobel Holding
192
Vontobel Holding
Switzerland
$2.02M +$2.11M +24,515 New
KK
193
KLP Kapitalforvaltning
Norway
$2M +$387K +4,500 +23%
DM
194
Diker Management
New York
$1.97M +$2.06M +24,000 New
Teacher Retirement System of Texas
195
Teacher Retirement System of Texas
Texas
$1.82M -$86.9M -1,010,341 -98%
AWM
196
Axxcess Wealth Management
California
$1.78M +$1.86M +21,650 New
EF
197
Empowered Funds
Pennsylvania
$1.76M +$103K +1,195 +6%
Asset Management One
198
Asset Management One
Japan
$1.72M +$1.8M +20,920 New
N
199
Numerai
California
$1.66M +$1.74M +20,185 New
CG
200
Caprock Group
Idaho
$1.63M +$1.56M +18,197 New
6 7
8
9 10

RBRK Hedge Fund Activity: Q3 2025 in Review

436 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Rubrik (RBRK) for Q3 2025, worth a combined $8.43B — down 5.6% from $8.93B a quarter earlier.

Buyers outnumbered sellers: 132 funds opened new RBRK positions and 81 closed out — a net gain of 51 holders — while 177 added to existing stakes and 81 trimmed.

The largest buyer was BlackRock, adding an estimated $152M. The largest seller was D.E. Shaw & Co, cutting an estimated $278M.

  • 436 institutional investors held Rubrik (RBRK) as of Q3 2025, up from 389 in Q2 2025.
  • Funds reported $8.43B of Rubrik stock for Q3 2025, down 5.6% quarter-over-quarter.
  • 132 funds opened new Rubrik positions in Q3 2025 and 81 closed out, a net change of +51 holders.
  • The largest Rubrik buyer in Q3 2025 was BlackRock, an estimated $152M added.
  • The largest Rubrik seller in Q3 2025 was D.E. Shaw & Co, an estimated $278M sold.

Based on aggregated 13F filings for Q3 2025.