TSS (TSSI) shares sank 44% in heavy trading after the company reported it swung to a Q3 loss amid lower revenue late Thursday.
More than 7.1 million shares of the company traded intraday compared with a daily average of about 2.5 million.
Anavex Life Sciences (AVXL) disclosed on Friday that a European regulator informed the company of a "negative trend vote" on its marketing authorization application for blarcamesine, a treatment for early Alzheimer's disease.
Shares sank 34% following an increase in intraday trading volume to over 19.1 million from a daily average of about 1.4 million.
ESS Tech (GWH) reported a year-over-year plunge in Q3 sales and a narrowing net loss late Thursday.
Shares slumped 37% as intraday trading volume rose to over 1.5 million from a daily average of about 8.8 million.
Price: 8.48, Change: -6.77, Percent Change: -44.39