** RBC downgrades defense contractor Lockheed Martin LMT.N to "sector perform" from "outperform", cuts PT to $480 from $550
** Cites concerns about international sales of F-35 jet and U.S. budget pressure
** "We see limited risk of (F-35) order cancellations, but we believe headline risk remains an overhang ... under the Trump administration" - RBC
** Shares down 0.7% at $442.04 premarket
** Last week, U.S. President Donald Trump awarded Boeing BA.N the contract to build F-47 fighter jet over LMT
** Analysts' average rating is equivalent of "hold"; median PT $525- data compiled by LSEG
** Shares down ~8.4% YTD vs ~9% increase in S&P 500 Aerospace and Defense index .SPLRCAERO
(Reporting by Rashika Singh in Bengaluru)
((rashika.singh@thomsonreuters.com))