Security key
781154109
Rubrik, Inc. - Class A Common Stock, $0.000025 par value (RBRK)
CUSIP: 781154109
Q3 2026 13F Holders as of 30 Sep 2026
- Security type / class
- Equity / Class A Common Stock, $0.000025 par value
- Total 13F shares
- 842,472
- Total 13F value
- $96,536,737
- Share change
- +201,951
- SEC-reported price per share
- $114.47
- Number of holders
- 27
- Value change
- +$23,120,681
- Number of buys
- 16
- Number of sells
- 5
- Shares outstanding
- 164,877,900
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2026
Institutions
27
Top holders
10
RBRK full security history
Ownership snapshot
Full 13F holder table
Rubrik, Inc. SEC filings
Rubrik, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 781154109
Recent filing periods:
Ownership snapshot
Top reported holders of RBRK - Rubrik, Inc. - Class A Common Stock, $0.000025 par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Arvind Nithrakashyap
Disclosed value leader
Bipul Sinha
Comparable rows
15/15
Latest evidence
26 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 12%
13D/G row: Arvind Nithrakashyap
Showing 1-6 of 15 holder rows.
Quick read
Arvind Nithrakashyap leads the comparable SEC ownership view at 12%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Arvind Nithrakashyap's linked filing trail.
Comparable ownership
Top 5
Arvind Nithrakashyap
12%
VANGUARD GROUP INC
9.2%
Bipul Sinha
8.9%
AQR CAPITAL MANAGEMENT LLC
6.2%
FMR LLC
5.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Arvind Nithrakashyap |
13D/G
|
12%
|
$802,422,708
11,343,267 shares
|
$0 | 31 Dec 2024 |
| VANGUARD GROUP INC |
13D/G
The Vanguard Group
|
9.2%
|
$1,070,586,398
13,016,248 shares
|
+$20,277,175 | 30 Sep 2025 |
| Bipul Sinha |
13D/G
3/4/5
Chairman of the Board and CEO, Director, 10%+ Owner
|
8.9%
|
$1,309,499,697
13,791,466 shares
|
+$41,225,486 | 12 Sep 2025 |
| AQR CAPITAL MANAGEMENT LLC |
13D/G
13F
Company
|
6.2%
|
$839,650,699
9,948,468 shares
|
$0 | 30 Jun 2026 |
| FMR LLC |
13F
13D/G
Company
|
5.3%
from 13D/G
|
$738,746,263
9,202,121 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5%
|
$685,919,138
8,127,004 shares
|
$0 | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
27
Shares
842,472
Rows available
27
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2026 vs Q2 2026 Across Filers
Q2 2026 holders
573
Q3 2026 holders
27
Holder diff
-546
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend