Key Points

Palantir is emerging as the military's AI core. Its platform is transitioning from experimental initiatives to essential defense systems, playing an increasing part in contemporary conflict strategies.
Lockheed holds the contracts that investors favor. Large multiyear missile defense awards along with a record backlog deliver unusually clear visibility into upcoming revenue streams.
Palantir could deliver quicker long term expansion, yet Lockheed's mix of secured initiatives, steady cash generation, and more modest valuation positions it as the stronger defense pick for 2026.

The defense sector over recent years has divided into two distinct narratives. One centers on software that converts vast sensor information into precise targeting choices. The other focuses on hardware such as interceptors, aircraft, and production facilities required during active conflicts.

Palantir Technologies (NASDAQ: PLTR) leads the software narrative. Lockheed Martin (NYSE: LMT) leads the hardware narrative. Both companies are securing new work, and the differences between them reveal much about defense spending directions heading into 2026.

Palantir's role in defense

Palantir has advanced from a data provider to the decision making layer for U.S. and allied forces. Its Maven Smart System runs on the Artificial Intelligence Platform that processes sensor data and identifies targets, and the Pentagon designated it an official program of record in 2026.

This designation is significant because it indicates sustained, funded demand instead of temporary trials. The Army consolidated roughly 75 separate agreements into one enterprise contract with a 10 billion dollar ceiling across 10 years, the company's largest deal to date, while NATO and the U.K. have also adopted Maven for their operations. Palantir is positioning itself as the foundational software layer that integrates other systems, a stable position as warfare grows more software driven.

Lockheed Martin's role in defense

Lockheed Martin focuses on building the required hardware. The central effort is the Golden Dome national missile shield, which has become the leading U.S. defense initiative of the decade.

Lockheed secured a 35.5 billion dollar contract for THAAD interceptors, committed to tripling PAC 3 output and quadrupling THAAD production through multiyear agreements, and earned prototype work on space based interceptors meant to engage missiles shortly after launch. Beyond the shield, the company continues to enhance the F 35 with advanced sensors and electronic warfare features, integrates the aircraft with autonomous drone partners, and advances hypersonic weapons development. It ended 2025 with a backlog near 194 billion dollars, representing more than two and a half years of sales based on the prior year's figures.

Evaluating each defense stock along with associated risks

Palantir's progress is tangible, and its software could integrate across numerous fielded platforms. However, the shares trade at levels that price in extended flawless expansion, so any quarterly shortfall can pressure the price. The company sells software into budgets that prioritize hardware, which limits the scale of its defense revenue in any single year.

Lockheed faces its own challenges. It lost the next generation fighter award to a competitor, its fixed price contracts have experienced cost overruns in the past, and the space interceptor competition for the Golden Dome involves multiple rivals pursuing the same funding.

Neither company offers a perfect opportunity, and investors should consider the limitations of each before deciding.

The stronger defense stock for 2026

The deciding factor is the allocation of 2026 funding. Resources in the current budget cycle are directed toward the missile shield and its supporting interceptor stockpiles, where Lockheed Martin holds a central position through multiyear contracts and a backlog that converts current developments into predictable future revenue.

Palantir may deliver stronger business performance over an extended period, and its software continues to expand across programs that Lockheed supports. For the coming year, however, the clarity of funded programs and the valuation an investor pays favor the hardware producer.

Palantir also participates in the wider AI market, where any company tied to artificial intelligence themes can see share prices driven by sentiment rather than underlying results. This connection works both ways: if enthusiasm for AI stocks fades, Palantir could decline even if its defense agreements proceed as planned.

Therefore Lockheed Martin stands as the better defense stock to hold in 2026, while Palantir remains worth monitoring as its software capabilities expand. Investors seeking defense exposure with reliable visibility into next year's revenue find a stronger position with Lockheed. Those who choose Palantir should adjust position sizes according to its valuation and view price fluctuations as part of the investment.

Should you purchase Lockheed Martin shares at present?

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Micah Zimmerman holds no positions in the mentioned stocks. The Motley Fool maintains positions in and recommends Palantir Technologies. The Motley Fool recommends Lockheed Martin. The Motley Fool maintains a disclosure policy.

The views and opinions expressed here are those of the author and do not necessarily represent those of Nasdaq, Inc.