Lockheed Martin vs. L3Harris: Which Defense Giant Belongs in Your Portfolio?

Lockheed Martin (NYSE: LMT | LMT Price Prediction) and L3Harris Technologies (NYSE: LHX) both reported Q4 2025 earnings on January 29, 2026. One is the largest defense prime contractor on earth, building jets and missiles at scale. The other is the electronics and communications backbone that makes those weapons systems work. Both cite the same tailwinds. The question is which business model you want to own.

Lockheed Roars Back. L3Harris Stays Steady.

Lockheed’s 2025 was a tale of two halves. A brutal Q2 charge of $1.6 billion across three programs cratered earnings mid-year. But the recovery was real: Q4 free cash flow surged 524.94% year-over-year to $2.756 billion, and the Missiles & Fire Control segment swung from a $804 million operating loss in Q4 2024 to a $535 million profit in Q4 2025. The engine: JASSM, LRASM, and PAC-3 production ramps. F-35 deliveries jumped from 110 in 2024 to 191 in 2025.

L3Harris had a quieter but more consistent year. Full-year organic revenue grew 5% across all segments, and the company logged record orders of $27.5 billion in Q4 with a book-to-bill of 1.3x. The Aerojet Rocketdyne segment grew 10% in Q4, driven by missile and munitions volumes. No dramatic swings. Just execution.

Platform Integrator vs. Trusted Disruptor

Lockheed is betting on scale and long-term government frameworks. CEO Jim Taiclet pointed to a “landmark, seven-year framework agreement for PAC-3 missiles” as proof that Washington is moving toward multi-year procurement relationships. Lockheed invested more than $3.5 billion in 2025 in production capacity and next-generation technologies. That capital intensity is a moat, but fixed-price contract risk stays elevated.

L3Harris is playing a different game. CEO Christopher Kubasik’s “Trusted Disruptor” strategy positions the company as prime, subcontractor, or merchant supplier depending on the opportunity. L3Harris is reorganizing from four segments into three for 2026, with new groupings around Space & Mission Systems, Communication & Spectrum Dominance, and Missile Solutions. It is also divesting a majority stake in its Space Technology disposal group, expected to close in H2 2026. Leaner and more focused.

Valuation Gap Is the Real Story

Both stocks have run hard in 2026. LMT is up about 35% year-to-date. LHX has gained about 24.5% over the same period. L3Harris has been the bigger one-year winner, up roughly 74% over the past year versus Lockheed’s 42%. That momentum is reflected in valuation: LHX trades at a trailing P/E of about 42x compared to LMT’s 30x. On a forward basis, LHX sits near 31x while LMT drops to around 22x. Lockheed is the cheaper stock on earnings power.

Lockheed Trades at a Discount on Forward Earnings

L3Harris deserves credit for consistent execution and a cleaner portfolio story. If the “Trusted Disruptor” model unlocks faster margin expansion, the premium valuation could be justified. Watch whether the segment reorganization and divestitures sharpen margins toward that low 16% segment operating margin target.

The Q2 charges are behind Lockheed. Segment operating profit is guided to grow roughly 25% in 2026 while the stock still trades at a meaningful discount to L3Harris on forward earnings. A $194 billion backlog covering more than two and a half years of sales is not a number that invites pessimism. Both companies are riding the same generational defense spending wave. On a forward earnings basis, Lockheed trades at a meaningful discount to L3Harris, with guided segment operating profit growth of roughly 25% in 2026.