After trending gently higher for the first half of the week, the euro has been sold to new three week lows in response to the disappointing Q4 GDP figures. The GDP figures are of course backward looking and more recent data, such as the PMI figures and German factory orders suggest the regional economy is stabilizing here in early Q1.
There is a middle step to go from the GDP figures to the euro and that is the interest rate channel. There has been some speculation that the passive tightening of the euro area financial conditions (including the shrinking of the ECB's balance sheet) and the strength of the euro would prompt the ECB to cut the refi rate later in Q1. The poor GDP readings bolster such expectations and this can be seen in short-term interest rates. The March Euribor futures contract is now implying 0.24% rate, having matched the lowest rate since Jan 23, or before the early repayment of LTRO I was announced.