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: Morgan Stanley upgraded Celsius Holdings (CELH) to Overweight from Equal Weight with a price target of $70, up from$61. Brand Celsius has returned to growth following last year's share slowdown and the firm expects further improvement with much easier comps from December through early June, says the firm, which ...