Rubrik Inc-a (RBRK) — 13F Filings Explorer (Q2 2026)

RBRK ranks #987 out of 37503 tracked stocks by institutional interest — one of the most closely watched names in our coverage.

RBRK is a disclosed holding of Cliff Asness (AQR Capital Management), one of the tracked superinvestors on AlphaSMO — it makes up 0.3% of that fund's own 13F portfolio.

RBRK is a top-conviction position for Institutional Venture Management XV, LLC — at 94.6% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.

The largest dollar stake in RBRK belongs to BlackRock, Inc., but the position matters far more to Institutional Venture Management XV, LLC, who has 94.6% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.

Cliff Asness has added to its RBRK position for two straight quarters, increasing it by $697.4M to reach $780.1M today.

Israel Englander has trimmed its RBRK position for two straight quarters, cutting it by $83.2M while still holding $19.4M.

RBRK is down 1.4% today, but institutions show net buying of $2.7B this quarter — a divergence between today's price move and the underlying institutional flow.

RBRK reported a net loss of $288.6M over the trailing twelve months.

• Not yet profitable — net loss of $288.6M over the trailing twelve months
• Revenue grew 45.7% year over year
• Net income improved year over year, from -$524.8M to -$288.6M
• Generated $282.9M in positive operating cash flow
• Current ratio of 1.69x — enough short-term assets to cover short-term liabilities