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STORY: Earnings "traditionally have been a lot more benign than some of the macro data this year," Casey says. "So hopefully that's the case (again)."

But "some of this macro data is a lot of what this market is focused on" - especially, says Casey, Friday's monthly non-farm payrolls report - a key data point for the Federal Reserve as it weighs the future path of its monetary policy.

"The jobs report isn't necessarily the most important thing for us as long-term investors," adds Casey, "but it's certainly what the market will be looking at for the rest of this week."