The latest Charles Schwab STAX report showed a sharp 15% plunge, its steepest drop since March 2020. Joe Mazzola urges investors to learn from the period of uncertainty and to "harness" volatility in your portfolios. However, some of the biggest sells included Alibaba (BABA), Strategy (MSTR), and Boeing (BA). Joe notes Mag 7 names like Nvidia (NVDA), Amazon (AMZN) and Tesla (TSLA) still gained significant traction.