Futures turned negative again in choppy pre-market trading Thursday as grim comments from ECB President Mario Draghi weighed on sentiment and even trumped a pair of better-than-expected employment reports.

"Economic growth in the euro area continues to remain weak , with heightened uncertainty weighing on confidence and sentiment," European Central Bank President Mario Draghi said at a news conference, adding the euro zone economy was subject to downside risks.

Earlier, the ECB slashed its interest rate to a record low of 0.75 percent and its deposit rate to zero in an effort to help tackle the ongoing euro zone crisis. European shares pared their gains .

And China's central bank also cut its interest rates for the second time in two months .

On the economic front, private employers added 176,000 jobs in June, according to the ADP National Employment Report, beating expectations for a gain of 105,000 positions. May's figures were revised up slightly to an increase of 136,000 jobs from the previously reported 133,000.

In addition, weekly jobless claims dropped 14,000 to a seasonally adjusted 374,000, according to the Labor Department, marking the biggest decline since April . Economists expected claims falling to 385,000, according to a Reuters poll. The four-week moving average for new claims fell 1,500 to 385,750.