Grocery Outlet rises after BofA lifts rating to 'buy'

** Discount grocery retailer Grocery Outlet Holding GO.O climbs 2.6% to $11.25 after BofA upgrades stock to "buy" from "neutral"

** Brokerage raises PT to $15 from $12.50

** BofA says valuations remain attractive despite concerns about supply chain costs, East Coast productivity and mixed results from its store refresh program

** Says co's "treasure hunt" shopping model is improving under CEO Jason Potter

** Expects e-commerce pricing parity with DoorDash DASH.O, Uber Technologies' Uber Eats and Instacart to support co's sales

** In August, co forecast a smaller decline in annual sales and reported better-than-expected Q2 results

** 1 of 14 brokerages rate the stock a "strong buy", 12 "hold", and 1 "sell"; median PT is $11 - data compiled by LSEG

** Including session's moves, GO up 11.3% YTD