Wall Street clearly made up for the shortened trading week by popping on Tuesday’s open and ending with another run to a record high on the Dow. Money that was previously on the sidelines has been pouring in and refuses to ebb. What has investors so bullish?

Well, the seemingly endless money pumping by several central banks has certainly helped. Many central banks are operating like a conductor of a runaway train and seemingly don’t know how to hit the brakes on their stimulus policies. As for the Fed, it recently stated that it plans to continue unabated with its $85 billion per month in Quantitative Easing. The fear is that a premature tightening of monetary policy could halt the economic recovery and cause a deflationary spiral.

The way things are shaping up, the Fed’s money pump will remain on until there is conclusive evidence of robust economic growth. I expect that the earliest this would occur would be four to five months from now. So Chairman Bernanke has no immediate plans of curtailing bond buying—which is great news for investors.

So this summer, we may in fact see smoother sailing than normal. It’s too soon to tell whether this will carry over into the typically volatile month of August, but I’m keeping a close eye on market barometers. Regardless of how the market swings this summer, you can prepare by continuously screening your stocks through my Portfolio Grader tool. A good place to start is by reviewing the 60 big blue chips that were just upgraded and downgraded this week. If you hold any of the stocks below, you may want to take note because they are making big moves.

Upgrades

Last Week’s Holds, Now Buys

Last Week’s Sells, Now Holds

Downgrades

Last Week’s Buys, Now Holds

Last Week’s Holds, Now Sells