Archer Aviation vs. Joby Aviation: This 1 eVTOL Stock Has The Better Balance Sheet

Archer Aviation is assessed as having the stronger current balance sheet, with $1.52B of cash and short-term investments net of $80.1M debt, versus Joby's $1.56B net liquidity after $701.9M of long-term debt; Archer also has higher shareholder equity per share. Joby's total liquidity rose 60.8%, or roughly $850M, to $2.3B through Q2, but its debt increased from zero at year-end 2025 to $701.9M. Both companies face material uncertainty pending FAA commercial eVTOL certification, while planned acquisitions—Joby's $500M Resonant Sciences deal and Archer's stock-funded acquisition of three Boeing subsidiaries—could substantially alter their balance sheets and share counts.

Analysis

Book value per share is not a useful discriminator for pre-commercial eVTOL companies: most value resides in certification probability, production learning curves, and access to long-duration capital rather than liquidation value. The more consequential divergence is transaction structure. Archer’s all-stock acquisition creates an immediate ~20% dilution overhang, while Joby’s largely cash-funded deal increases execution and integration risk but preserves relative ownership if the acquired defense assets generate contracted revenue and utilize existing manufacturing capacity.

Over the next 1-3 months, ACHR is more exposed to a valuation reset as investors model the enlarged share count and demand clarity on whether acquired Boeing assets are operationally transferable rather than strategically attractive. JOBY’s new leverage is manageable only if cash burn remains controlled; a rise in quarterly operating cash use, material capex commitments, or delayed certification would make its nominal net-cash position less relevant. FAA certification milestones, not balance-sheet snapshots, remain the dominant binary catalyst, with any schedule slippage likely compressing both equities simultaneously.

The non-obvious beneficiary is BA: transferring non-core aviation assets into Archer converts uncertain internal development spending into a meaningful equity stake and creates optionality without bearing full commercialization costs. Contrarian view: the market may be underpricing defense procurement as the nearer-term monetization channel versus passenger air-taxi operations, but neither acquisition should receive full credit until backlog, funded contract value, and integration economics are disclosed. The thesis is falsified if dilution-adjusted cash runway remains above 24 months and either company demonstrates repeatable aircraft production or binding commercial revenue ahead of certification.

Key Decisions for Investors

• Avoid directional ACHR or JOBY exposure into acquisition-close mechanics; establish a monitoring trigger for pro forma share count, cash burn, and transaction-related lockups rather than treating reported book value as a catalyst.
• Consider a 3-6 month relative-value position: long JOBY / short ACHR in equal beta-adjusted dollars only if Archer confirms the full 19.75% dilution before a comparable FAA milestone. Target 15-25% relative outperformance; exit if JOBY quarterly cash burn accelerates materially or Archer receives a certification-timeline advantage.
• For BA, maintain a small 6-12 month optionality long rather than using ACHR as the sole expression of the asset transfer. Upside requires evidence that the equity consideration is strategically monetizable; reduce if Boeing retains material funding, indemnity, or operational obligations after closing.
• Set event alerts for FAA conformity/testing updates and quarterly cash-flow guidance. A certification schedule delay of one reporting cycle or a cash-runway estimate falling below 24 months should prompt de-risking across both eVTOL names regardless of relative balance-sheet optics.