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.
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
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$480M |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
+$401M |
| 3 |
D.E. Shaw & Co
New York
|
+$159M |
| 4 |
First Trust Advisors
Wheaton,
Illinois
|
+$109M |
| 5 |
Acadian Asset Management
Boston,
Massachusetts
|
+$97.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BCVI
Bain Capital Venture Investors
Boston,
Massachusetts
|
-$111M |
| 2 |
PC
PointState Capital
New York
|
-$81.1M |
| 3 |
SSA
Schonfeld Strategic Advisors
New York
|
-$59.4M |
| 4 |
Norges Bank
Oslo,
Norway
|
-$51M |
| 5 |
ACM
Altimeter Capital Management
Boston,
Massachusetts
|
-$50.7M |
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.