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: Baird upgraded Zions Bancorp (ZION) to Outperform from Neutral with an unchanged price target of $65. The firm tells investors to take advantage of the selloff in the shares.Stifel upgraded International Paper (IP) to Buy from Hold with an unchanged price target of$57.80. The firm says the "original exuberance" p ...