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Jeff Yass’s SELLAS Life Sciences SLS Stock Holding History

Jeff Yass’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 		$30.3M Buy
2,050,597
+1,653,541
+416% +$11.4M ﹤0.01% 2008
2026
Q1 		$1.68M Buy
397,056
+47,301
+14% +$212K ﹤0.01% 6576
2025
Q4 		$1.32M Sell
349,755
-513,820
-59% -$999K ﹤0.01% 6553
2025
Q3 		$1.39M Sell
863,575
-626,097
-42% -$1.12M ﹤0.01% 6569
2025
Q2 		$3.26M Buy
1,489,672
+800,976
+116% +$1.23M ﹤0.01% 4798
2025
Q1 		$744K Buy
+688,696
New +$818K ﹤0.01% 8004
2023
Q4 		– Sell
-70,446
Closed -$76.2K – 13226
2023
Q3 		$116K Buy
70,446
+54,984
+356% +$86.7K ﹤0.01% 10797
2023
Q2 		$24.3K Buy
+15,462
New +$24.8K ﹤0.01% 11589
2022
Q2 		– Sell
-101,554
Closed -$298K – 13852
2022
Q1 		$678K Buy
101,554
+8,091
+9% +$47.3K ﹤0.01% 8168
2021
Q4 		$517K Sell
93,463
-19,403
-17% -$147K ﹤0.01% 9115
2021
Q3 		$1.03M Sell
112,866
-125,962
-53% -$1.17M ﹤0.01% 7474
2021
Q2 		$2.65M Buy
238,828
+71,425
+43% +$697K ﹤0.01% 5303
2021
Q1 		$1.43M Buy
+167,403
New +$1.37M ﹤0.01% 6778
2020
Q3 		– Sell
-10,778
Closed -$32K – 11094
2020
Q2 		$32K Buy
+10,778
New +$29.2K ﹤0.01% 9855
2018
Q4 		– Sell
-217
Closed -$16.8K – 9880
2018
Q3 		$13K Buy
+217
New +$15K ﹤0.01% 9033
2018
Q1 		– Sell
-34
Closed -$9.71K – 10107
2017
Q4 		$13K Buy
+34
New +$16.4K ﹤0.01% 9106
2017
Q3 		– Sell
-13
Closed -$8.58K – 9557
2017
Q2 		$12K Sell
13
-1
-7% -$870 ﹤0.01% 9063
2017
Q1 		$13K Sell
14
-21
-60% -$34.8K ﹤0.01% 8768
2016
Q4 		$101K Buy
+35
New +$204K ﹤0.01% 9080

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 374.31% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
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
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Jeff Yass's SLS Position: Q2 2026 in Review

Jeff Yass increased its SELLAS Life Sciences (SLS) stake by 416% in Q2 2026, buying an estimated $11.4M and bringing the position to 2,050,597 shares worth $30.3M. The position accounts for ﹤0.01% of the portfolio, ranked #2008.

Jeff Yass first reported a position in SLS in Q4 2016 and has held it in 19 quarters since. 190 funds tracked by Wall St. Rank hold SLS as of Q2 2026.

  • Jeff Yass held 2,050,597 shares of SELLAS Life Sciences worth $30.3M as of Q2 2026.
  • Jeff Yass bought 1,653,541 SELLAS Life Sciences shares in Q2 2026, an estimated $11.4M.
  • SELLAS Life Sciences made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #2008 holding.
  • Jeff Yass first reported a position in SELLAS Life Sciences in Q4 2016 and has held it in 19 quarters since.
  • 190 funds tracked by Wall St. Rank held SELLAS Life Sciences as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.