** U.S. bank Investar's ISTR.O shares rise 4% to $29.86
** ISTR posts Q1 profit above Wall Street expectations
** "We felt the quarter was solid with an expense, provision, and fee-driven beat, as well as a core PPNR (pre-provision net revenue) beat. We expect shares should perform well relative to peers at the open" - brokerage Hovde Group
** All three brokerages covering the stock rate it "buy"; median PT $33 - data compiled by LSEG
** As of last close, ISTR stock up 7.4% YTD
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com;))