In the latest trading session, Lockheed Martin (LMT) closed at $603.20, marking a -0.44% move from the previous day. This change lagged the S&P 500's 0.01% gain on the day. Meanwhile, the Dow gained 0.09%, and the Nasdaq, a tech-heavy index, added 0.08%.Coming into today, shares of the aerospace and defense company had gained 6.81% in the past month. In that same time, the Aerospace sector gained 1.4%, while the S&P 500 gained 1.21%.Investors will be eagerly watching for the performance of Lockheed Martin i ...