Oracle upgraded, Workday downgraded: Wall Street's top analyst calls

The most talked about and market moving research calls around Wall Street are now in one place. Here are today's research calls that investors need to know, as compiled by The Fly.Top 5 Upgrades: Wells Fargo upgraded Principal Financial (PFG) to Equal Weight from Underweight with a price target of $91, up from $85. The firm sees less downside following the post-earnings selloff.Loop Capital upgraded Trex Company (TREX) to Buy from Hold with a price target of $53, up from $45, following the Q4 report. Loop ...