Gainers
BioAtla, Inc. (NASDAQ: BCAB) gained 50.1% to $5.42 following Q2 results.
Euro Tech Holdings Company Limited (NASDAQ: CLWT) surged 39.5% to $2.0380.
Morgan Stanley analyst Tejas Savant downgrades Berkeley Lights (NASDAQ:BLI) from Equal-Weight to Underweight and lowers the price target from $10 to $5.
Wedbush boosted the price target on Twitter, Inc. (NYSE: TWTR) from $30 to $50. Wedbush analyst Daniel Ives maintained the stock with a Neutral rating. Twitter shares rose 3.4% to $44.29 in pre-market trading.