Despite market volatility, a swell of good news lifted Archer stock in July.Archer Aviation (ACHR 0.25%) stock surged in July's trading. The company's share price rose 18.5% in the month, according to data from S&P Global Market Intelligence.Thanks to a series of positive developments, Archer Aviation was able to post gains despite volatility in the broader market. The flying-taxi specialist attracted new investment from Stellantis, received positive analyst coverage, and benefited from other bullish cataly ...