The media giant's stock dropped approximately 5 percent in early trade and shaved off about 43 points from the price-weighted Dow.
USA stock index futures pointed to a slightly lower open on Wednesday, as investors focus on rising geopolitical tensions between the US and North Korea, and get ready to pore over another slew of corporate earnings.
Technology and consumer-focused companies helped lift US stocks higher in afternoon trading Tuesday, steering the market indexes further into record territory.
USA 30-year bond yields, which move inversely to prices, also hit a six-week trough, while yields on US 2-year notes matched a low hit four weeks ago.
Bill Northey, chief investment officer at U.S. Bank Private Client Group in Helena, Montana, said the market's risk-off move on North Korea tensions has been relatively shallow.
The TSX Composite was down 39.02 points or 0.26 percent, to 15,217.33.
North Korea said it was considering plans to fire missiles at Guam, a US -held Pacific island, after President Donald Trump on Tuesday warned the nuclear-armed nation that it would face "fire and fury" if it threatened the United States. More than 70 percent of S&P 500 companies that had reported posted better-than-expected earnings while 69 percent have beaten of sales, according to data from Thomson Reuters I/B/E/S.
The S&P hasn't moved more than 0.5 percent in one day since July and has fallen more than 1 percent only twice this year. Lockheed Martin, Raytheon, General Dynamics and Northrop Grumman and the Dow Jones U.S. defense index .DJUSDN was up 1.48 percent after hitting a record high.
USA 30-year bond yields slid to a six-week trough of 2.790 percent, compared with 2.867 percent late on Tuesday.
Six of the S&P 500 sectors ended higher.
FASHIONABLE RESULTS: Investors cheered Ralph Lauren's latest quarterly results, sending the designer clothing company's shares up $8.59, or 11 percent, to $86.74.
Japan's Nikkei 225 was down 1.25% and South Korea's Kospi declined 0.68%. Energy stocks fell along with crude prices as investors kept an eye on the latest company earnings and geopolitical news. The euro slid to $1.1760 from $1.1793. Brent crude, used to price worldwide oils, gave up 29 cents to $51.85 in London.
The yield on the 10-year US Treasury note rose to 2.282% from 2.258% on Monday.
In Europe, the Stoxx 600 Index advanced 0.2%. While the UK's FTSE 100 Index slid by 0.6%, the German DAX Index slumped by 1.1% and the French CAC 40 Index tumbled by 1.4%.
Global markets were sharply lower on Wednesday.