This move will affect valuations of US Equities, specially if EU stops the QE before its expected.
Major policy changes have been taken in two steps in recent years with Draghi announcing preparations for a change in one meeting, then following through six weeks later.
https://www.reuters.com/article/us-ecb-policy-praet/ecb-to-debate-next-week-whether-to-end-qe-this-year-praet-idUSKCN1J20M3

