SELLAS LIFE SCIENCES GROUP I (SLS) Institutional Ownership Changes & 13F Activity

SELLAS LIFE SCIENCES GROUP I (SLS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Susquehanna International Group, Llp, Jones Financial Companies Lllp, Jane Street Group, Llc, Invesco Ltd., and Xtx Topco Ltd.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheBuy+3,246+7.1%48,937$722.31KQ2 2026Sep 09, 2026
Integrated Wealth Concepts LlcSell-3-0.0%10,008$147.72KQ2 2026Sep 09, 2026
California State Teachers Retirement SystemBuy+193,037+2067.4%202,374$2.99MQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+48,38348,383$714.12KQ2 2026Aug 19, 2026
Pin Oak Investment Advisors IncBuy+280280$4.00Q2 2026Aug 18, 2026
Jefferies Financial Group Inc.Buy+200,459200,459$2.96MQ2 2026Aug 17, 2026
Susquehanna International Group, LlpBuy+1,653,541+416.5%2,050,597$30.27MQ2 2026Aug 14, 2026
Jones Financial Companies LllpBuy+629,484+37.6%2,304,561$28.55MQ2 2026Aug 14, 2026
Jane Street Group, LlcBuy+508,429508,429$7.50MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+375,342375,342$5.54MQ2 2026Aug 14, 2026
Xtx Topco LtdBuy+359,090359,090$5.30MQ2 2026Aug 14, 2026
Wellington Management Group LlpBuy+252,531+73.2%597,309$8.82MQ2 2026Aug 14, 2026
Legal & General Group PlcBuy+152,658+1008.2%167,800$2.48MQ2 2026Aug 14, 2026
Bank Of America CorpBuy+146,266+22.8%787,949$11.63MQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+103,112+45.7%328,819$4.85MQ2 2026Aug 14, 2026
Highbridge Capital Management LlcBuy+99,40099,400$1.47MQ2 2026Aug 14, 2026
State Of Wisconsin Investment BoardBuy+95,21095,210$1.41MQ2 2026Aug 14, 2026
Harvest Investment Services, LlcBuy+94,48294,482$1.39MQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+84,404+17.6%565,008$8.34MQ2 2026Aug 14, 2026
Gotham Asset Management, LlcBuy+74,34474,344$1.10MQ2 2026Aug 14, 2026
Alliancebernstein L.P.Buy+72,120+44.0%236,060$998.53KQ2 2026Aug 14, 2026
Engineers Gate Manager LpSell-67,785-81.9%14,995$221.33KQ2 2026Aug 14, 2026
Squarepoint Ops LlcSell-64,239-85.9%10,512$155.16KQ2 2026Aug 14, 2026
Caption Management, LlcBuy+49,37349,373$728.75KQ2 2026Aug 14, 2026
Mangrove Partners Im, LlcBuy+34,14034,140$503.91KQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+32,946+27.0%155,066$2.29MQ2 2026Aug 14, 2026
Sculptor Capital LpBuy+30,30030,300$447.23KQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+29,122+5.2%585,035$8.64MQ2 2026Aug 14, 2026
Teacher Retirement System Of TexasBuy+20,99320,993$309.86KQ2 2026Aug 14, 2026
Mirae Asset Global Etfs Holdings Ltd.Buy+16,486+16.8%114,775$1.71MQ2 2026Aug 14, 2026
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Frequently asked questions about SLS activity

  • Which institutional owners are buying SLS?

    Institutional owners buying SLS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in SLS activity?

    "Buy" means an investor increased their reported position in SLS compared to the prior reporting period. This reflects growing exposure to SELLAS LIFE SCIENCES GROUP I (SLS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in SLS increasing?

    Institutional interest in SLS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.