** Shares of oOh!media OML.AX fell as much as 14.8% to A$1.508, their biggest intraday pct loss since early-May, 2023
** Media firm posts HY loss attributable of A$11.3 mln ($7.36 mln), down more than 290% YoY
** Co expects 2H25 adj gross margin to improve in 1H, full-year margin to be nearly 44%
** Jefferies says Q3 pacing outlook look softer and FY25 gross margin guidance a "bit weaker"
** However, brokerage adds, major contracts, medium-term expiry profile are 'benign', and recent high-quality wins are drawing premium advertisers
** Over 2.9 mln shares change hands, about 3x 30-day avg
** Stock last down 10.2%, trims YTD gains to nearly 35%
($1 = 1.5347 Australian dollars)
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com; X: @thatstanishk;))