What's up? Business activity and mortgage rates, that's what

WHAT'S UP? BUSINESS ACTIVITY AND MORTGAGE RATES, THAT'S WHATHalfway through the week, and data geeks finally get tossed some meat to chew on.Starting with S&P Global's advance "Flash" purchasing managers' indexes (PMI), business activity in the U.S. expanded at an unexpectedly accelerated pace so f…