SEI Investments’s SELLAS Life Sciences SLS Stock Holding History

SEI Investments’s Portfolio SLS Stock Details SLS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$112K	Hold	26,581	–	–	﹤0.01%	3075
2025 Q4	$100K	Hold	26,581	–	–	﹤0.01%	3013
2025 Q3	$42.8K	Buy	+26,581	New	+$47.3K	﹤0.01%	2791

Other funds holding SLS

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Jones Financial Companies Des Peres, Missouri $208B AUM 16.12% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

VFT

Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM

SEI Investments's SLS Position: Q1 2026 in Review

SEI Investments held its SELLAS Life Sciences (SLS) position steady in Q1 2026 at 26,581 shares worth $112K. The position accounts for ﹤0.01% of the portfolio, ranked #3075.

SEI Investments first reported a position in SLS in Q3 2025 and has held it in 3 quarters since. 160 funds tracked by Wall St. Rank hold SLS as of Q1 2026.

SEI Investments held 26,581 shares of SELLAS Life Sciences worth $112K as of Q1 2026.
SEI Investments left its SELLAS Life Sciences share count unchanged in Q1 2026.
SELLAS Life Sciences made up ﹤0.01% of SEI Investments's portfolio in Q1 2026, its #3075 holding.
SEI Investments first reported a position in SELLAS Life Sciences in Q3 2025 and has held it in 3 quarters since.
160 funds tracked by Wall St. Rank held SELLAS Life Sciences as of Q1 2026.

Based on SEI Investments's 13F filing for Q1 2026, filed 13 May 2026.