CNBC Daily Open: Solid earnings beats might mask tariff volatility these two weeks

Friday, Aug. 1 — the "hard deadline" of U.S. President Donald Trump's updated tariffs — is less than two weeks away. Investors, however, seem mostly unbothered thus far. For last week, while the Dow Jones Industrial Average dipped marginally, the S&P 500 and Nasdaq Composite rose 0.6% and 1.5%…