UK's Morgan Advanced Materials bottoms FTSE midcaps after tepid sales outlook
** Morgan Advanced Materials MGAMM.L shares fall as much as 13.7% to 188.4 pence, top loser on FTSE mid cap index .FTMC ** Co's full year 2025 sales outlook to 4% on an organic constant currency basis, citing weak semiconductor market demand ** Expects adjusted operating profit margin at about 10%, down from 11.7% in the previous year. ** As of last close, stock down 27.9% YTD, while FTMC down 0.4% (Reporting by Tuhina in Bengaluru) ((Tuhina@thomsonreuters.com))