** Shares of British pub group Marston's MARS.L rise 3.3% to 42.6 pence
** Stock on track for its biggest one-day pct gain since April 4, if trends hold
** Shares climb as co swings to profit in H1, reiterates outlook
** Pre-tax profit came in at 19 million pounds for six-month period ended March 29, vs loss of 0.2 million pounds for the same period last year
** Co attributes gains mainly to its cost-efficiency measures and higher food and beverage sales driven by favorable weather
** Expects FY2025 performance to be in line with current market expectations
** Five of seven brokerages rate the stock "buy" or higher, while two suggest "hold"; their median PT is 55 pence - data compiled by LSEG
** Stock down 3.2% so far this year
($1 = 0.7575 pounds)
(Reporting by Amna Mariyam in Bengaluru)
((Amna.mariyam@thomsonreuters.com))