SEI Investments
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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
Q2 		$392K Hold
26,581
– – ﹤0.01% 2747
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
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
AFM
Anson Funds Management Dallas, Texas $1.68B AUM 373.57% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
Jones Financial Companies
Jones Financial Companies Des Peres, Missouri $250B AUM 21.32% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

SEI Investments's SLS Position: Q2 2026 in Review

SEI Investments held its SELLAS Life Sciences (SLS) position steady in Q2 2026 at 26,581 shares worth $392K. The position accounts for ﹤0.01% of the portfolio, ranked #2747.

SEI Investments first reported a position in SLS in Q3 2025 and has held it in 4 quarters since. 193 funds tracked by Wall St. Rank hold SLS as of Q2 2026.

  • SEI Investments held 26,581 shares of SELLAS Life Sciences worth $392K as of Q2 2026.
  • SEI Investments left its SELLAS Life Sciences share count unchanged in Q2 2026.
  • SELLAS Life Sciences made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #2747 holding.
  • SEI Investments first reported a position in SELLAS Life Sciences in Q3 2025 and has held it in 4 quarters since.
  • 193 funds tracked by Wall St. Rank held SELLAS Life Sciences as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.