WASHINGTON UNIVERSITY: RUBRIK INC (RBRK): Quarterly 13F Position History
As of Q2 2026, WASHINGTON UNIVERSITY reported 22,803 shares of RUBRIK INC (RBRK), worth $1.8M and representing 0.7% of its 13F equity book. Quarter-over-quarter share count change: + 22,803 (re-initiated) . The position first appeared in Q4 2025 and has been disclosed across 3 13F-HR filings in Pactolio's tracked window.
- 22,803Shares Held (Latest Filing)
- $1.8MReported Market Value (Latest Filing)
- 0.7%Portfolio Weight (% of 13F Equity Book)
- +22,803Quarter-over-Quarter Share Change
- +$1.8MQuarter-over-Quarter Value Change
- 50,488Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 3 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 22,803 | +22,803 | — | $1.8M | 0.7% | $80.3 |
| Q1 2026 | 0 | 50,488 | -100.0% | $0 | 0.0% | — |
| Q4 2025 | 50,488 | — | — | $3.9M | 2.0% | $76.5 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did WASHINGTON UNIVERSITY first disclose a RBRK position in 13F-HR filings?
WASHINGTON UNIVERSITY first reported RUBRIK INC (RBRK) on its 13F-HR filing for the period ending 2025-12-31 (Q4 2025). The position has appeared on 3 reported quarters within Pactolio's tracked window.
What was WASHINGTON UNIVERSITY's most recent quarter-over-quarter share-count change in RBRK?
Between Q1 2026 and Q2 2026, WASHINGTON UNIVERSITY added 22,803 shares of RBRK (re-initiated), bringing the total reported position to 22,803 shares at a market value of $1.8M.
Does the implied price-per-share represent WASHINGTON UNIVERSITY's cost basis in RBRK?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.