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RBRK · Rubrik, Inc.

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$93.04 -0.01 (-0.01%) At close · Aug 31
Market Cap
$19.15B
Shares
205.83M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 583
Total Value: $11,040,378,166
Total Shares: 137,594,449
Showing 1–100 of 614 holdings by value · page 1 of 7

Institutional Ownership Trend

9 quarters

Holder Concentration

Across 583 13F filers · Δ vs Mar 31, 2026
Top Holder
7.3%
Jun 2024 → Jun 2026 · range 7.2% – 11.9%
+0.1 pts
Top 5
32.2%
Jun 2024 → Jun 2026 · range 23.3% – 35.0%
+2.5 pts
Top 10
46.7%
Jun 2024 → Jun 2026 · range 36.5% – 53.8%
+3.7 pts
HHI
299
Jun 2024 → Jun 2026 · range 228 – 393
Broadly held+30

Quarterly Activity

vs Mar 31, 2026
New
187
Increased
227
Decreased
120
Sold Out
74
Unchanged
49
Holder count: +113
Institutional value: +83.2%
Shares held: +11.8%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 614
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1943896 CUSIP 781154109 13F (30d) 414 filings 408 filers Visit website Investor relations