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: Scotiabank upgraded OpenText (OTEX) to Outperform from Sector Perform with a price target of $50, up from$35. The firm cites increased conviction" in the company's content management business for the upgrade.Jefferies upgraded Quanta Services (PWR) to Buy from Hold with a price target of $469, up from$398. The s ...