Mariner
SLS icon

Mariner’s SELLAS Life Sciences SLS Stock Holding History

Mariner’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 		$2.93M Buy
198,212
+24,642
+14% +$170K ﹤0.01% 1284
2026
Q1 		$734K Buy
173,570
+14,420
+9% +$64.5K ﹤0.01% 2195
2025
Q4 		$600K Buy
159,150
+50,344
+46% +$97.8K ﹤0.01% 2326
2025
Q3 		$175K Buy
108,806
+57,697
+113% +$103K ﹤0.01% 3220
2025
Q2 		$112K Sell
51,109
-91
-0.2% -$140 ﹤0.01% 3222
2025
Q1 		$55.3K Buy
51,200
+591
+1% +$702 ﹤0.01% 3302
2024
Q4 		$52.6K Buy
50,609
+3,180
+7% +$3.63K ﹤0.01% 3283
2024
Q3 		$59.3K Buy
47,429
+2,500
+6% +$3.06K ﹤0.01% 3169
2024
Q2 		$53.5K Buy
44,929
+19,672
+78% +$26.8K ﹤0.01% 3046
2024
Q1 		$25.5K Buy
+25,257
New +$21.2K ﹤0.01% 3079
2017
Q2 		– Sell
-10
Closed -$9K – 551
2017
Q1 		$9K Buy
+10
New +$16.6K ﹤0.01% 590

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

Mariner's SLS Position: Q2 2026 in Review

Mariner increased its SELLAS Life Sciences (SLS) stake by 14% in Q2 2026, buying an estimated $170K and bringing the position to 198,212 shares worth $2.93M. The position accounts for ﹤0.01% of the portfolio, ranked #1284.

Mariner first reported a position in SLS in Q1 2017 and has held it in 11 quarters since. 193 funds tracked by Wall St. Rank hold SLS as of Q2 2026.

  • Mariner held 198,212 shares of SELLAS Life Sciences worth $2.93M as of Q2 2026.
  • Mariner bought 24,642 SELLAS Life Sciences shares in Q2 2026, an estimated $170K.
  • SELLAS Life Sciences made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #1284 holding.
  • Mariner first reported a position in SELLAS Life Sciences in Q1 2017 and has held it in 11 quarters since.
  • 193 funds tracked by Wall St. Rank held SELLAS Life Sciences as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.