Top Midday Gainers

02:22 PM EDT, 09/17/2026 (MT Newswires) -- BioAffinity Technologies (BIAF) said Thursday the Hong Kong Intellectual Property Department has granted a patent for its platform technology to predict the likelihood of lung cancer. Shares soared 58% as intraday trading volume surged to over 21.6 million from a daily average of roughly 2.6 million. Roth Capital initiated coverage on MediciNova (MNOV) with a buy rating and a $6 price target. Shares were up 30%, with intraday trading volume rising to over 6.0 million shares from a daily average of about 78,000. Generac (GNRC) said late Wednesday it has signed a long-term supply agreement with Amazon (AMZN), with initial deliveries of backup power generators for data centers expected to reach $2.4 billion in 2027 and 2028. Shares surged 17% as intraday trading volume catapulted to over 6.5 million from a daily average of about 1.1 million. Price: 8.50, Change: +3.15, Percent Change: +58.88