Rubrik (RBRK): ARK Investment Management added to its stake +31K shares

396K

Shares reported · +31K vs prior quarter

0.26%

Disclosed portfolio weight

$45.3M

Reported value

Holdings as of

Sep 30, 2026

Filed

Nov 13, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Oct 1, 2026Insider · 1 personInsiders: 6 sales (~$1.6M)
2. Oct 5, 2026Insider · 2 peopleInsiders: 7 sales (~$1.7M)
3. Oct 6, 2026Insider · 1 personInsiders: 4 sales (~$1.6M)
4. Oct 7, 2026Insider · 1 personInsiders: 4 sales (~$1.6M)
5. Oct 30, 20265% stakeVanguard Capital Management reported a passive stake (13G) of 4.9%
6. Oct 30, 20265% stakeVanguard Portfolio Management reported a passive stake (13G) of 4.8%
7. Nov 2, 2026Insider · 2 peopleInsiders: 23 sales (~$3.1M)
8. Nov 3, 2026Insider · 1 personInsiders: 5 sales (~$1.5M)
9. Nov 4, 2026Insider · 2 peopleInsiders: 8 sales (~$1.6M)
10. Nov 5, 20265% stakeFMR LLC reported a passive stake (13G) of 9.1%

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for Rubrik

For Rubrik, OQRO holds 59 insider filings (SEC Form 4 or Form 144) and 1 fund holdings report (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its RBRK page.

How this filing works

• SEC Form 13F

Other disclosures at Rubrik

• SEC Form 4Nov 5, 2026
• SEC Form 4Nov 4, 2026
• SEC Form 4Nov 4, 2026
• SEC Form 4Nov 4, 2026
• SEC Form 4Nov 4, 2026
• SEC Form 4Nov 4, 2026

Everything OQRO holds on this company is on its RBRK page.