Atea Pharmaceuticals (AVIR) closed at $4.08 on October 21, 2026, down 8.6% from the previous close, on volume of 439,313 shares (30-day average 296,894).
Data as of October 21, 2026.
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Atea Pharmaceuticals Inc is a late-stage clinical biopharmaceutical company focused on the discovery, development, and commercialization of oral antiviral therapies for serious viral diseases. The company's pipeline includes a regimen of bemnifosbuvir and ruzasvir for the treatment of hepatitis C virus (HCV) infection and AT-587 for the treatment of hepatitis E virus (HEV) infection.
Atea Pharmaceuticals trades on the NASDAQ stock market under the symbol AVIR.
As of October 22, 2026, AVIR stock price declined to $4.06 with 152,225 million shares trading.
AVIR has a beta of 1.19, meaning it tends to be more sensitive to market movements. AVIR has a correlation of 0.06 to the broad based SPY ETF.
AVIR has a market cap of $325.63 million. This is considered a Small Cap stock.
In the last 3 years, AVIR traded as high as $6.45 and as low as $2.46.
The top ETF exchange traded funds that AVIR belongs to (by Net Assets): VTI, IWM, VXF, DFAS, IWN.
AVIR has outperformed the market in the last year with a return of +23.4%, while the SPY ETF gained +14.8%. However, in the most recent history, AVIR shares have underperformed the stock market with its stock returning -16.6% in the last 3 month period and -19.0% for the last 2 week period, while SPY has returned +2.2% and -1.8%, respectively.
AVIR support price is $3.93 and resistance is $4.23 (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 AVIR shares will trade within this expected range on the day.