U.S. stock-market indexes opened lower on Tuesday, with the Dow industrials down by triple digits after a North Korean missile test over Japanese airspace rattled investors, prompting them to sell assets perceived as risky. The Dow Jones Industrial Average
opened 133 points, 0.6%, lower at 21,678. The S&P 500
was down by 14 points, or 0.6%, to 2,429 at the open. Implied volatility as measured by the CBOE Volatility Index
jumped 19%, but was still at relatively low level around 13. The Nasdaq Composite index
declined 50 points, or 0.8% to 6,232. Among the worst performers on Wall Street, Best Buy Co., Inc.
was down sharply despite estimate-beating earnings.