Marshall Wace
SLS icon

Marshall Wace’s SELLAS Life Sciences SLS Stock Holding History

Marshall Wace’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 		$8.62M Buy
2,037,162
+696,494
+52% +$3.12M 0.01% 1047
2025
Q4 		$5.05M Sell
1,340,668
-1,017,331
-43% -$1.98M ﹤0.01% 1152
2025
Q3 		$3.8M Sell
2,357,999
-357,490
-13% -$637K ﹤0.01% 1305
2025
Q2 		$5.95M Buy
2,715,489
+2,704,007
+23,550% +$4.15M 0.01% 1060
2025
Q1 		$12.4K Buy
+11,482
New +$13.6K ﹤0.01% 2571
2021
Q3 		– Sell
-84,544
Closed -$938K – 3388
2021
Q2 		$938K Buy
84,544
+32,683
+63% +$319K ﹤0.01% 1850
2021
Q1 		$443K Buy
+51,861
New +$424K ﹤0.01% 1992

Other funds holding SLS

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
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
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Jones Financial Companies
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
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
DI
DAGCO Inc Westlake, Ohio $541M AUM 29.31% 1-Year Est. Return

Marshall Wace's SLS Position: Q1 2026 in Review

Marshall Wace increased its SELLAS Life Sciences (SLS) stake by 52% in Q1 2026, buying an estimated $3.12M and bringing the position to 2,037,162 shares worth $8.62M. The position accounts for 0.01% of the portfolio, ranked #1047.

Marshall Wace first reported a position in SLS in Q1 2021 and has held it in 7 quarters since. 160 funds tracked by Wall St. Rank hold SLS as of Q1 2026.

  • Marshall Wace held 2,037,162 shares of SELLAS Life Sciences worth $8.62M as of Q1 2026.
  • Marshall Wace bought 696,494 SELLAS Life Sciences shares in Q1 2026, an estimated $3.12M.
  • SELLAS Life Sciences made up 0.01% of Marshall Wace's portfolio in Q1 2026, its #1047 holding.
  • Marshall Wace first reported a position in SELLAS Life Sciences in Q1 2021 and has held it in 7 quarters since.
  • 160 funds tracked by Wall St. Rank held SELLAS Life Sciences as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.