Sellas Life Sciences Group I (SLS) Institutional Ownership Tracker (Q2 2026)

SLS ranks #2931 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.

SLS is a top-conviction position for Anson Funds Management LP — at 6.3% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.

The largest dollar stake in SLS belongs to BlackRock, Inc., but the position matters far more to Anson Funds Management LP, who has 6.3% 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 SLS position for two straight quarters, increasing it by $202.3M to reach $202.4M today.

SLS is up 10.8% today, and institutions have been net buyers of $655.8M this quarter — today's price move and the underlying institutional flow are pointing the same direction.

SLS reported a net loss of $32.5M over the trailing twelve months.

• Not yet profitable — net loss of $32.5M over the trailing twelve months
• Revenue declined 100.0% year over year
• Net income declined year over year, from -$26.3M to -$32.5M
• Operating cash flow was negative, using $28.4M in cash
• Current ratio of 10.72x — enough short-term assets to cover short-term liabilities
• Liabilities run 0.11x equity — within a conventional range