Lockheed Martin stock before the bell slips 0.9 percent

At the close on September 18, 2026, Lockheed Martin stock finished at USD 533.38 on the NYSE, down 0.9 percent. It traded between USD 529.51 and USD 539.63 and closed below its 52-week high by 12.8 percent.

Lockheed Martin stock closed at USD 533.38 on the NYSE on September 18, 2026, down 0.9 percent from the prior session. The move left the shares 12.8 percent below the 52-week high, while the day's range stayed between USD 529.51 and USD 539.63.

September 18, 2026 in numbers

Lockheed Martin Corporation (ISIN US5398301094) traded in line with a broader defense pause. Stock World reported that the stock stayed under pressure as congressional scrutiny around F-35 parts added caution, and that the shares were still 24 percent below their 52-week high in euro terms. The stock also lagged the stronger NASDAQ Composite, which rose 0.39 percent on September 18, 2026.

Today before the bell

According to Air & Space Forces Magazine, the Pentagon announced on September 17 a deal with Lockheed Martin to expand production of the AIM-260 Joint Advanced Tactical Missile. The same report said Reuters covered U.S. approval on September 17 for a potential Saudi Arabia sale of Lockheed Martin's F-35 jets.