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: Cantor Fitzgerald upgraded Alphabet (GOOGL) to Overweight from Neutral with a price target of $370, up from$310. The firm believes Alphabet has the "strongest footprint across several layers in the AI tech stack." Cantor Fitzgerald upgraded Airbnb (ABNB) to Neutral from Underweight with a price target of $141 ...