** Shares of energy infrastructure platform Hut 8 HUT.O jump 9.3% to $25.64

** HUT unveils plan to build four new sites across the United States with more than 1.5 gigawatts of capacity

** Roth Capital says this is a notable step-up for HUT's power-first strategy and brings to market a credible pipeline of sites

** Tenant agreements could boost HUT shares as new sites are built - brokerage

** All 13 brokerages covering the stock rate it "buy" or higher; with the median PT of $28, according to data compiled by LSEG

** As of last close, HUT shares up 14.4% YTD

(Reporting by Arasu Kannagi Basil in Bengaluru)

((ArasuKannagi.Basil@thomsonreuters.com))