With the market worried that Mario Draghi could surprise hawkishly in his parting announcement... ... that is how the market initially interpreted today's ECB press release , which cut already negative deposit rates for the first time since 2016 to stimulate the sagging European economy, but by a smaller than expected 10bps to -0.50% while restarting QE but by "only" €20 billion, less than the €30 billion baseline. However, there was more than enough offsetting dovish bells and whistles, because while the restarted QE (or the Asset Purchase Program) was smaller than expected, it will be open-ended, and the ECB will run it "for as long as necessary to reinforce the accommodative impact of its policy rates, and to end shortly before it starts raising the key ECB interest rates." Of course, the question here is how long can a safe-asset constrained Europe run an "open-ended" QE, and the answer is it depends on what the issuer limit by nation is, wit...