Archer Aviation’s stock jumped 7.4% over the past week, fueled by investor optimism around its defense projects and upcoming financial results. The company’s shares closed Monday at $4.95, adding 3.8% on the day, and have gained roughly 11.5% since mid-July.

Defense Developments and Market Potential

A key driver behind the surge is Archer’s collaboration with Anduril Industries on the Thunder autonomous hybrid-electric aircraft. This defense-focused project aims to broaden Archer’s scope beyond commercial air mobility into military applications, with a first flight planned for 2027. The company also unveiled Halo, a commercial aircraft concept based on the same technology, which sparked additional investor interest. However, Archer has yet to disclose concrete contract values or confirmed orders related to these initiatives.

CEO Adam Goldstein emphasized that Thunder is designed for specific defense needs rather than mass commercial use, highlighting a targeted approach to government contracts. This strategic shift could open new revenue streams if the programs advance as expected.

Investors are now closely watching Archer’s cash reserves and contract progress as the August 10 earnings report approaches. The company anticipates an adjusted EBITDA loss between $170 million and $200 million for Q2 but currently holds nearly $1.78 billion in liquidity, providing some cushion amid ongoing development costs.

The recent rally added an estimated $390 million to Archer’s market capitalization, based on its 759.6 million shares outstanding. This gain reflects growing confidence but also shows the need for tangible commercial success to sustain momentum.