US STOCKS-Wall St dips as crude heads for third weekly loss
* Boeing biggest drag on Dow
* Disney falls after rating cut
* Indexes down: Dow 1.15 pct, S&P 0.88 pct, Nasdaq 0.62 pct (Adds details, changes comment, updates prices)
By Abhiram Nandakumar
Dec 18 (Reuters) - Wall Street was lower in morning trading, with the Dow shedding about 200 points, on "quadruple witching" Friday as crude prices headed for their third straight weekly loss.
Volatility was slightly higher than usual on account of "quadruple witching," the expiry of options on stocks and indexes as well as futures on indexes and single stocks.
Still, the S&P 500 and Nasdaq were set for their best weekly performance in a month, helped by gains before the Federal Reserve's interest rate hike on Wednesday.
"I look at it as purely a sentiment-driven market. There's no new news that's any kind of substance that's driving this," said Jeff Powell, managing partner of Polaris Wealth Advisors in California.
"I think they will continue to trend as they are right now," he said. Continuación...