Sellas Life Sciences Group (SLS) closed at $11.98 on October 20, 2026, up 14.2% from the previous close, on volume of 9,764,892 shares (30-day average 5,860,393).
Data as of October 20, 2026.
Market Chameleon (Mon, 28-Sep 4:39 AM ET)
Globe Newswire (Fri, 25-Sep 1:00 PM ET)
PRNewswire (Thu, 24-Sep 5:34 PM ET)
Globe Newswire (Wed, 2-Sep 8:30 AM ET)
SELLAS Life Sciences Reports Second Quarter 2026 Financial Results and Provides Corporate Update
Globe Newswire (Tue, 11-Aug 4:05 PM ET)
Market Chameleon (Wed, 13-May 6:34 AM ET)
SELLAS Nears Key Phase 3 Milestone as Pipeline Advances and Cash Reserves Strengthen
Market Chameleon (Wed, 13-May 3:07 AM ET)
SELLAS Life Sciences Group Inc is a late-stage clinical biopharmaceutical company focused on the development of novel therapeutics for a broad range of cancer indications. The company's product candidates currently include galinpepimut-S, or GPS, a peptide immunotherapy directed against the Wilms tumor 1, or WT1, antigen, and GFH009, a selective small molecule cyclin-dependent kinase 9, or CDK9, inhibitor.
Sellas Life Sciences Group trades on the NASDAQ stock market under the symbol SLS.
As of October 21, 2026, SLS stock price climbed to $12.18 with 457,606 million shares trading.
SLS has a beta of 0.52, meaning it tends to be less sensitive to market movements. SLS has a correlation of 0.00 to the broad based SPY ETF.
SLS has a market cap of $2.46 billion. This is considered a Mid Cap stock.
In the last 3 years, SLS traded as high as $15.88 and as low as $.50.
The top ETF exchange traded funds that SLS belongs to (by Net Assets): VTI, XBI, IWM, VXF, IWO.
SLS has outperformed the market in the last year with a price return of +506.0% while the SPY ETF gained +15.9%. However, in the short term, SLS had mixed performance relative to the market. It has underperformed in the last 3 months, returning -2.4% vs +4.1% return in SPY. But in the last 2 weeks, SLS shares have fared better than the market returning +7.4% compared to SPY -1.1%.
SLS support price is $11.30 and resistance is $12.66 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that SLS shares will trade within this expected range on the day.
