Futures turn negative as core inflation rises

The Labor Department said its Consumer Price Index rose 0.1 percent last month, while the so-called core CPI, which strips out food and energy costs, increased 0.3 percent, the largest gain since January 2013. The data comes a few hours ahead of Fed Chair Janet Yellen's take on the economy that investors will peruse for clues on the timing of a rate hike. The Fed is aiming for inflation at 2 percent before it will consider raising rates, but has said that a significant pick-up is not a prec