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Of the 16 tracked institutions holding RBRK, 10 have a 3-year clone track record — 8 of them beat the S&P. Average holder's clone alpha: +6.9pt. It's a gauge of who owns the name, not just how many.
Among the 16 tracked institutional investors we monitor, RBRK (RUBRIK INC.) is held with a combined value of $2.40B across 40,747,594 shares. The largest holder is VANGUARD GROUP INC with a position worth $1.12B (0.02% of their portfolio). 2 funds opened new positions in the most recent quarter. 8 funds increased their holdings. 6 funds reduced their position.
Total Institutional Value
$2.40B
Total Shares Held
40,747,594
Institutional Holders
16
Days to Cover
4.1+4.9%
13.67M shares short · FINRA 2026-07-15
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $1.12B | 0.02% | +12.9% |
| 2 | BlackRock, Inc. | $431.76M | 0.01% | -24.7% |
| 3 | FMR LLC | $404.56M | 0.02% | +56.7% |
| 4 | STATE STREET CORP | $125.70M | 0.00% | +8.9% |
| 5 | AQR CAPITAL MANAGEMENT LLC | $104.87M | 0.05% | +105.0% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $43.47M | 0.01% | +59.5% |
| 7 | CITADEL ADVISORS LLC | $35.81M | 0.03% | +27.0% |
| 8 | Atreides Management, LP | $27.74M | 0.68% | -36.7% |
| 9 | WELLINGTON MANAGEMENT GROUP LLP | $24.08M | 0.00% | +31.6% |
| 10 | MILLENNIUM MANAGEMENT LLC | $22.75M | 0.01% | -65.4% |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of RBRK with a position worth $1.12B, representing 0.02% of their portfolio. In total, 16 institutional investors hold RBRK with a combined value of $2.40B.
In the most recent quarter, 2 funds opened a new position in RBRK. Additionally, 8 increased their holdings and 6 reduced their positions.
Institutional investors hold $2.40B worth of RBRK stock across 16 positions. The largest institutional holder is VANGUARD GROUP INC with $1.12B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For RBRK, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their RBRK positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$73.24
2026-07-24
YTD
-3.0%
54% of 52-week range
