The Nasdaq composite fell 13 points, or 0.2 percent, to 6,370.
A spokesman for the Korean People's Army said in a statement that it was "carefully examining" plans for a missile attack on the U.S. Pacific territory, which has a large American military base.
Shares of Walt Disney Co fell about 5% and of Netflix fell about 3%, after Disney said it would end a distribution deal with Netflix for new Disney and Pixar movies in 2019, as it invests in the launch of its own ESPN- and Disney-branded online streaming sites.
The Dow Jones industrial average lost 71 points, or 0.3 percent, to 22,013.
While gold, a safe-haven favourite, pared some gains it was last up 1.2 per cent at around its highest since mid-June, while the Swiss franc and the Japanese yen also rose.
The Dow Jones Industrial Average.DJI was up 7.32 points, or 0.03 percent, to 22,125.74, the S&P 500.SPX gained 1.71 points, or 0.07 percent, to 2,482.62 and the Nasdaq Composite.IXIC added 17.56 points, or 0.28 percent, to 6,401.33. The stock lost $142.20 to $1,906.80.
Major indexes in Asia closed lower.
Chemicals firm Brenntag led fallers, down 4.5 percent after second quarter results undershot expectations. Fifteen of the Dow's 30 stocks ended higher, led by Home Depot and Travelers' 1.2% rallies.
The dollar index, which tracks the greenback against a basket of six major rivals, was almost flat on the day at 93.683, remaining above last week's 15-month low of 92.548. Travel-review website operator TripAdvisor was down 2.7 percent.More news: Trump 'Reckless' North Korea Remarks Undermine US Security - Congressman Engel
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Shares of Fossil Group (NASDAQ:FOSL) tanked more than 20% after the fashion accessory company reported a wider-than-expected loss per share and revenue that missed Wall Street's views.
JPMorgan Chase rose 1.1 percent and Texas Instruments rose 1.6 percent. The company booked a hefty charge and said its CFO is leaving the company.
Bond prices rose. The yield on the 10-year Treasury note slipped to 2.25 percent from 2.26 percent late Tuesday. The stock lost $2.80 to $9.04.
Japan's Nikkei 225 was down 1.25% and South Korea's Kospi declined 0.68%. While the UK's FTSE 100 Index has fallen by 0.6%, the German DAX Index is down by 1.1% and the French CAC 40 Index is down by 1.5%. Henry Schein lost 5.1 percent and Microsoft lost 0.6 percent.
Tuesday's rise puts the Dow on track to post its 11th straight session of gains - the blue-chip index's longest streak since February - driven by a strong quarterly earnings season.
FED WATCH: Investors looked ahead to an appearance Thursday by Bill Dudley, president of the U.S. Federal Reserve Bank of NY, for signs of the Fed's outlook on the economy.
Networking, semiconductor, and internet stocks are also seeing some weakness, while gold stocks are moving notably higher amid a jump by the price of the precious metal.
CURRENCIES: The dollar fell to 109.96 yen from 110.48 yen late Tuesday. The euro edged down to $1.1726 from $1.1751.