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: BTIG upgraded CoStar Group (CSGP) to Buy from Neutral with an 80pricetarget.Expectationsarelow,investmentispastpeak,Homes.comisgainingmomentumandthefirmthinksanupcomingAI−drivenproductupdatecouldresonate,thefirmtellsinvestors.NeedhamupgradedTeleflex(TFX)toBuyfromHoldwitha138 ...