** Shares of British luxury watch retailer Watches of Switzerland WOSG.L down 2.4% at 334 pence
** Stock top loser on the FTSE mid-caps .FTMC index, which is up 0.4%
** Kepler Cheuvreux downgrades stock to "hold" from "buy", cuts PT to 350p from 475p amid concerns over the impact of new U.S. tariffs on Swiss products
** Watches of Switzerland sells watches from Swiss brands, including Rolex, in the United States
** Brokerage expects margin pressure as brands lower distributor margins and U.S. customers shop abroad
** "While we acknowledge the stock is not expensive, we see a period of estimate cuts as our numbers move below consensus and guidance" - brokerage
** Including session moves, WOSG down ~40% YTD, FTMC up ~6%
(Reporting by Nithyashree R B in Bengaluru)
((NithyashreeRB@thomsonreuters.com))