Why Joby Aviation Stock Plummeted 19.8% in July But Is Soaring in August

Joby Aviation shares fell 19.8% in July, reversing a stronger August. Data from S&P Global Market Intelligence shows the S&P 500 was roughly flat during the month, while the Nasdaq Composite declined 3.2%. The company, an early eVTOL player, faced a market that remained highly speculative toward the sector and prone to big valuation swings. The stock is still down about 34% year to date despite a post-earnings rebound. The article attributes July’s dip mainly to broader growth-stock repositioning and no major Joby-specific positive catalyst, with some investment attention potentially diverted by Archer Aviation’s hybrid platform announcement.