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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
Lazard Asset Management
276
Lazard Asset Management
New York
$645K +$42K +488 +7%
FP
277
Financial Perspectives
Minnesota
$617K – – –
Prudential Financial
278
Prudential Financial
New Jersey
$607K -$82.6K -961 -12%
IWC
279
Integrated Wealth Concepts
Massachusetts
$595K +$403K +4,683 +184%
FDCDDQ
280
Federation des caisses Desjardins du Quebec
Quebec, Canada
$586K +$593K +6,902 +3,068%
Rockefeller Capital Management
281
Rockefeller Capital Management
New York
$574K +$599K +6,973 New
IA
282
IFP Advisors
Florida
$566K +$362K +4,206 +157%
Pacer Advisors
283
Pacer Advisors
Pennsylvania
$564K +$428K +4,976 +265%
FCM
284
Fieldview Capital Management
Michigan
$562K +$587K +6,828 New
HP
285
Haven Private
Florida
$556K +$9.37K +109 +2%
SA
286
Sanctuary Advisors
Indiana
$556K +$581K +6,757 New
CIA
287
Choate Investment Advisors
Massachusetts
$551K +$292K +3,397 +103%
HCA
288
Harbour Capital Advisors
Virginia
$548K +$288K +3,350 +95%
RIM
289
Rakuten Investment Management
Japan
$545K +$169K +1,964 New
TI
290
Tidal Investments
Wisconsin
$541K -$2.75K -32 -0.5%
GAA
291
Green Alpha Advisors
Colorado
$530K -$57.9K -673 -9%
AAP
292
Arax Advisory Partners
Colorado
$518K +$542K +6,301 New
URS
293
Utah Retirement Systems
Utah
$504K -$510K -5,928 -49%
Two Sigma Advisers
294
Two Sigma Advisers
New York
$502K -$65M -755,597 -99%
BC
295
Bridgefront Capital
Texas
$501K +$523K +6,089 New
SMAM
296
Sugar Maple Asset Management
Wisconsin
$494K +$516K +6,000 New
CMF
297
Counterpoint Mutual Funds
California
$493K +$516K +5,997 New
MSRPS
298
Maryland State Retirement & Pension System
Maryland
$477K +$92.6K +1,077 +23%
LBWM
299
Left Brain Wealth Management
Illinois
$475K – – –
TFS
300
Thoroughbred Financial Services
Tennessee
$474K -$8.34K -97 -2%
10 11
12
13 14

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.