Who Owns Adaptive Biotechnologies (ADPT)? 13F Institutional Holders (Q2 2026)

ADPT ranks #2103 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.

ADPT is a disclosed holding of Andreas Halvorsen (Viking Global Investors), one of the tracked superinvestors on AlphaSMO — it makes up 1.8% of that fund's own 13F portfolio.

ADPT is a top-conviction position for Blue Water Life Science Advisors, LP — at 13.7% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.

The largest dollar stake in ADPT belongs to Viking Global Investors LP, but the position matters far more to Blue Water Life Science Advisors, LP, who has 13.7% 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.

California State Teachers Retirement System has added to its ADPT position for two straight quarters, increasing it by $137.2M to reach $139.0M today.

Principal Financial Group Inc has trimmed its ADPT position for two straight quarters, cutting it by $24.4M while still holding $832.9K.

ADPT is up 1.3% today, and institutions have been net buyers of $439.2M this quarter — today's price move and the underlying institutional flow are pointing the same direction.

ADPT reported a net loss of $63.9M over the trailing twelve months.

• Not yet profitable — net loss of $63.9M over the trailing twelve months
• Revenue grew 50.1% year over year
• Net income improved year over year, from -$121.2M to -$63.9M
• Operating cash flow was negative, using $46.0M in cash
• Current ratio of 3.34x — enough short-term assets to cover short-term liabilities
• Liabilities run 1.32x equity — within a conventional range