Gainers

Helius Medical Technologies, Inc. (NASDAQ:HSDT) shares rose 159.3% to $1.67 in pre-market trading after dropping 13% on Tuesday. Eargo, Inc. (NASDAQ:EAR) shares rose 148% to $1.74 in pre-market trading. The company is scheduled to report Q2 earnings on Monday, August 8. Applied DNA Sciences, Inc. (NASDAQ:APDN) shares rose 63% to $4.57 in pre-market trading after jumping 297% on Tuesday. Applied DNA Sciences initiated analytical validation of a company-developed, PCR-based monkeypox virus test specific to the genetic signature of the monkeypox virus. Tuniu Corporation (NASDAQ:TOUR) shares rose 61% to $1.30 in pre-market trading after dropping over 9% on Tuesday. Chembio Diagnostics, Inc. (NASDAQ...