** Shares of e-commerce giant Amazon AMZN.O rise 0.3% to $223.09 premarket after at least two brokerages raise PT

** Morgan Stanley ups PT to $300 from $250, implying an upside of nearly 35% to the stock's last close, calls AMZN a "top pick"

** Brokerage reiterates "overweight" rating, says macro landscape is getting more constructive with "lower tariffs" compared with 145% tariffs on China in April

** Morgan Stanley expects healthy AWS growth as supply constraints ease, with more revenue contribution from Anthropic

** Piper Sandler also lifts PT to $250 from $212 at an implied premium of more than 12%, as it raises AWS estimates on strong CIO survey data; maintains "overweight" rating

** Sixty-nine brokerages rate the stock "buy" and higher, four "hold"; median PT is $247 - data compiled by LSEG

** Stock up 1.3% YTD upto last close

(Reporting by Ankita Yadav in Bengaluru)

((Ankita.Yadav@thomsonreuters.com;))