Futures down after 2 days of consecutive gains

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FILE - In this Sept. 3, 2013, file photo, traders work on the floor at the New York Stock Exchange in New York. Global stocks were mixed Wednesday Sept. 11, 2013 amid optimism about a possible Chinese recovery and concern over a possible U.S. attack on Syria. (AP Photo/Seth Wenig, File)

NEW YORK (AP) — U.S. futures are falling after two consecutive days of solid gains, with the Standard & Poor's index headed for its strongest weekly percentage increase since mid-July.

Dow Jones industrial futures are down 4 points to 15,169. S&P futures have lost 2.2 points to 1,680.20. Nasdaq futures are down 15 points to 3,167.75.

Investors may be taking a pause ahead of retail sales data due from the Commerce Department on Friday. Retailers offer an undefined look at the mood of the American consumer, who's spending drives about 70 percent of all U.S. economic activity.

Most economists expect a slight uptick in consumer spending for August.

On Wednesday, Commerce releases wholesale trade data for July. Economists believe steady sales gains have prompted businesses to restock more aggressively, which could drive economic growth.