More importantly, keep an eye on commodity futures. Last time they were down, our top 40 followed suit. And NYSE might not give guidance in that area. Reasons for going long? Simple, trend is still up. Today is just a correction (I hope :)), not a reversal. However, I'll wait for a while before making a call either way - need to see if it trades back up above 23250 first.
No doubt this is a bull market. I do doubt that a mayor reversal would happen overnight though - will go sideways first IMO, but who is to say?. But right now, for next few days/weeks, I think we gonna have the market letting of some steam. IMHO. I would personally welcome another rally to yesterday high though, anything more than that would change my opinion