Amprius Technologies (AMPX) is back on investors’ radar after being removed from several Russell indices, including the Russell Microcap and Russell 3000E families. This shift can influence trading flows and institutional ownership.

The index deletions come after a volatile stretch for Amprius Technologies, with the share price down 37.52% over the past 30 days and 15.06% over 90 days, despite a 55.49% year to date share price gain and a very large 1 year total shareholder return of 210.27%. This suggests that recent momentum has faded after a strong longer term run.

If you are looking beyond Amprius Technologies in the electrification and power supply theme, this could be a useful moment to scan 35 power grid technology and infrastructure stocks

So with Amprius Technologies posting sharp recent declines but still showing a strong 1 year total return and trading below analyst and intrinsic estimates, is this a genuine buying opportunity, or is the market already pricing in future growth?

Most Popular Narrative: 29.4% Undervalued

Based on the most followed narrative, Amprius Technologies has an implied fair value of $19.25 versus the last close of $13.59, pointing to a sizable valuation gap that hinges on a very specific growth story.

Ongoing investment in automation and manufacturing capacity (supported by government contracts like the $10.5M Defense Innovation Unit award) positions Amprius to capture a larger share of future high-margin opportunities in defense and critical infrastructure, enhancing both revenue visibility and earnings stability.

Want to see what kind of revenue ramp, margin shift, and future earnings multiple are built into that fair value for Amprius Technologies? The narrative leans on rapid scaling, richer mix, and a premium profit profile that looks very different from today.

Result: Fair Value of $19.25 (UNDERVALUED)

However, the bullish Amprius Technologies narrative still depends on the company’s ability to scale complex silicon anode production and maintain concentrated aviation and drone demand without contract or qualification setbacks.

Another View: How Amprius Technologies Looks On Sales Based Valuation

The fair value estimate built from future cash flows paints Amprius Technologies as undervalued, but the current P/S ratio of 21.7x tells a different story. That is far above the US Electrical industry at 2.8x, the peer average at 16.8x, and a fair ratio of 6.4x, which points to meaningful valuation risk if expectations cool.

For a closer look at what this richer P/S ratio could imply for Amprius Technologies if sentiment or growth assumptions change, See what the numbers say about this price — find out in our valuation breakdown.

Next Steps

With sentiment on Amprius Technologies split between recent share price pressure and an optimistic long term narrative, this is a good time to review the data yourself and decide how you feel about the risk and reward trade off. To see a concise summary of both sides before you make your own call, take a look at the 3 key rewards and 3 important warning signs.

Looking for more investment ideas beyond Amprius Technologies?

If Amprius Technologies has caught your attention, do not stop here; use this moment to widen your watchlist and spot other compelling setups before they move.

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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.