Stock futures waver before Fed speech, growth data

U.S. stock futures are swerving between small gains and losses as traders await fresh economic data and a major speech by Federal Reserve Chairman Ben Bernanke.

The government reports at 8:30 a.m. on the pace of growth in the second quarter. Economists expect that the economy grew at a slower rate than previously estimated. Shares have fallen this month as analysts lowered their expectations for growth.

Bernanke speaks at 10 a.m. on the worsening economy. Many traders hope to hear about aggressive plans by the central bank to keep interest rates low. Economists expect a list of options.

S&P 500 futures are down 2.4 points, or 0.2 percent, at 1,155. Dow futures are down 17, or 0.2 percent, at 11,114. Nasdaq 100 futures are down 3, or 0.2 percent, 2,108.