At 7:45 am ET on Thursday, December 3rd, markets will know what the ECB will do with its interest rates until its next meeting in 2016. Mario Draghi will give a press conference at 8:30 am ET to explain the details.
Based on the Year-to-Date graph below, which shows how Europe's Major Indices have fared compared with U.S. Major Indices in 2015, I'd wonder why the ECB would think that it has to pour on more QE stimulus, as many media pundits are predicting...we'll see what happens.