Bethesda, Maryland-based Lockheed Martin Corporation (LMT) is an aerospace and defense company that researches, designs, develops, manufactures, integrates, and sustains technology systems, products, and services. Valued at $143.5 billion by market cap, the company’s businesses span space, telecommunications, electronics, information and services, aeronautics, energy, and systems integration. The world's largest defense contractor is expected to announce its fiscal first-quarter earnings for 2026 before th ...