Lockheed Martin (LMT) Stock Sinks As Market Gains: What You Should Know Posted byZacks Equity Research December 7, 2021 Leave a comment on Lockheed Martin (LMT) Stock Sinks As Market Gains: What You Should Know Lockheed Martin (LMT) closed at $339.17 in the latest trading session, marking a -0.23% move from the prior day.