• On 27 June 2026, Amprius Technologies, Inc. (NYSE: AMPX) was removed from several Russell indices, including the Russell Microcap Index, Russell 3000E Index and their related Growth Benchmark indices, following the latest index reconstitution.
• This broad index exclusion can alter the company’s investor base, as index-tracking funds and some institutional investors may adjust or exit their positions.
• We’ll examine how Amprius’ removal from multiple Russell indices may influence its investment narrative built around advanced battery demand and capacity expansion.

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Amprius Technologies Investment Narrative Recap

To own Amprius, you really have to believe that silicon anode batteries will win meaningful share in aviation, drones, and light electric vehicles, and that the company can scale production without eroding its technology edge. The Russell index removals may affect short term trading and liquidity, but they do not directly change the near term operational catalyst around ramping contract manufacturing or the key risk that scaling remains costly while the business is still unprofitable.

In that context, the February 2026 manufacturing partnership with Nanotech Energy stands out. It adds a U.S. production pathway for Amprius’ high energy SA128 21700 cells and complements the Korea alliance, tying directly into the capacity expansion catalyst while highlighting the ongoing risk that heavy reliance on external partners in multiple regions can amplify supply chain and geopolitical exposure.

Yet against these growth ambitions, the possibility of further dilution to fund expansion is something investors should be aware of if revenue momentum slows and ...

Amprius Technologies' narrative projects $306.6 million revenue and $13.4 million earnings by 2028.

Uncover how Amprius Technologies' forecasts yield a $19.25 fair value, a 55% upside to its current price.

Exploring Other Perspectives

While the consensus narrative leans on strong battery demand and capacity build out, the most bearish analysts were already assuming steep revenue growth to about US$361.6 million and a swing to roughly US$39.7 million in earnings by 2029, so their more pessimistic view of execution and funding risk could shift further after Amprius’ index removals, reminding you that opinions differ widely and are worth comparing before making up your mind.

Explore 8 other fair value estimates on Amprius Technologies - why the stock might be worth just $15.00!

Form Your Own Verdict

Don't just follow the ticker - dig into the data and build a conviction that's truly your own.

• A great starting point for your Amprius Technologies research is our analysis highlighting 3 key rewards and 3 important warning signs that could impact your investment decision.
• Our free Amprius Technologies research report provides a comprehensive fundamental analysis summarized in a single visual - the Snowflake - making it easy to evaluate Amprius Technologies' overall financial health at a glance.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.