This article was automatically generated by MarketWatch using technology from Automated Insights.
Shares of Lockheed Martin Corp. (LMT) rallied 2.38% to $528.31 Monday, on what proved to be an all-around mixed trading session for the stock market, with the Dow Jones Industrial Average rising 0.32% to 49,686.12 and the S&amp;P 500 Index falling 0.07% to 7,403.05.
Lockheed Martin Corp. closed 23.65% below its 52-week high of $692.00, which the company reached on March 2nd.
The stock demonstrated a mixed performance when compared to some of its competitors Monday, as RTX Corp. (RTX) rose 2.79% to $175.95, Boeing Co. (BA) rose 0.05% to $220.61, and Northrop Grumman Corp. (NOC) rose 1.72% to $550.00.
Trading volume (1.2 M) remained 300,161 below its 50-day average volume of 1.5 M.
Data source: Dow Jones Market Data, FactSet. Data compiled May 18, 2026.
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05-18-26 1637ET

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Lockheed Martin Corp. (LMT) shares rose 2.38% to $528.31 on Monday, but underperformed compared to competitors like RTX Corp. and Boeing Co. Despite the gain, LMT remains 23.65% below its 52-week high of $692.00. The overall market showed mixed results, with the Dow Jones up 0.32% and the S&P 500 down 0.07%. Trading volume was below average at 1.2 million shares.

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Lockheed Martin Corp. Stock Underperforms Monday When Compared To Competitors Despite Daily Gains