AEVA vs OUST: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. AEVA and OUST share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined AEVA and OUST exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Aeva Technologies designs and builds 4D lidar sensors using Frequency Modulated Continuous Wave (FMCW) technology, an approach that measures the instant velocity of every point it sees in addition to distance and position. Founded in 2017 by two former Apple engineers and taken public through a SPAC merger, Aeva positions its lidar-on-chip, built on silicon photonics, as a next-generation alternative to the time-of-flight lidar that most rivals use. Its target markets span automotive driver-assistance and autonomy, autonomous trucking, industrial automation, consumer and security applications, and, more recently, defense and what the company calls physical AI.

Full AEVA guide

Ouster designs and sells digital lidar sensors, the laser-based 3D perception hardware that lets machines see and map their surroundings. Its addressable markets span four verticals: robotics and drones, industrial automation, smart infrastructure (such as traffic, security, and crowd analytics), and automotive. The company scaled meaningfully through its 2023 merger with Velodyne, which broadened its product line and customer base, and it now ships tens of thousands of sensors per quarter under product families like the OS series and the newer Rev8 line with native color sensing. Ouster frames itself as a beneficiary of the broader "Physical AI" wave, where robots and autonomous systems need reliable spatial perception.

Full OUST guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• AEVA drivers: Daimler Truck and the path to production; FMCW differentiation and physical AI.
• OUST drivers: Physical AI and robotics demand; Product cadence and margin improvement.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The dominant risk is that Aeva is pre-profit and burns cash, so its future depends on raising more capital or reaching scale before liquidity runs low; further equity raises would dilute existing shareholders. For OUST, ouster remains unprofitable, with a trailing net loss around $56 million and meaningful free cash flow burn, and it is not forecast to reach profitability for at least a couple of years.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick AEVA if you believe its drivers more; OUST if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the AEVA and OUST guides.

AEVA. All figures are approximate and tied to the asOf date; verify live numbers before acting. For a pre-profit company like Aeva, traditional earnings multiples are not meaningful, so the market values it on revenue growth, the credibility of its design-win pipeline, and how long its cash lasts. That makes the stock a bet on execution and future adoption rather than on present-day profits, and small changes in expectations can move it dramatically.

OUST. OUST trades at a high multiple of trailing sales (roughly mid-teens times revenue), reflecting expectations of continued rapid growth rather than current earnings. The combination of accelerating revenue, improving margins, and a strong cash position is offset by ongoing losses and share dilution. Figures are approximate and as of May 2026.

Headline figures (approximate, Jul 2026): AEVA shows revenue trend Early-stage but growing fast; roughly $18 million in FY2025 with 2026 guidance of about $30 million to $36 million (verify live), profitability Pre-profit; the company operates at a loss as it invests in R&D and scaling production, cash and runway A few hundred million in total liquidity (cash, marketable securities, and an undrawn facility) against a cash burn of tens of millions per quarter, gross margin Still developing; scaling volumes and the new Atlas platform are meant to improve unit economics over time; OUST shows revenue (ttm) ~$185M, q1 2026 revenue ~$48.6M (up ~49% YoY), net loss (ttm) ~$56M, gross margin ~43%.

AEVA and OUST are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined AEVA and OUST exposure against your real portfolio. It is not an investment adviser.