The short reaction to all this is it’s an unambiguous positive for stocks. The bad news is we’re likely to see continued volatility given the slow growth in the economy, and investors should not look forward to a ’90s style rebound.

Russ Koesterich, Barclays’s head of investment strategy in San Francisco.

We’ve pretty much gotten valuations to the point where all this liquidity around the world is going to go to the equity market. We’ve nationalized a big chunk of the American economy. We’ve decided we don’t want to bear the brunt of economic cycle.

James Swanson, chief investment strategist at MFS, over $200b under management.