Aehr Test Systems (NASDAQ:AEHR) rallies 10% this week, taking five-year gains to 987%

It might be of some concern to shareholders to see the Aehr Test Systems, Inc. (NASDAQ:AEHR) share price down 29% in the last month. But over five years returns have been remarkably great. Indeed, the share price is up a whopping 987% in that time. Arguably, the recent fall is to be expected after such a strong rise. The most important thing for savvy investors to consider is whether the underlying business can justify the share price gain. Unfortunately not all shareholders will have held it for the long term, so spare a thought for those caught in the 64% decline over the last twelve months. It really delights us to see such great share price performance for investors.

The past week has proven to be lucrative for Aehr Test Systems investors, so let's see if fundamentals drove the company's five-year performance.

Check out our latest analysis for Aehr Test Systems

While markets are a powerful pricing mechanism, share prices reflect investor sentiment, not just underlying business performance. One imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

During the five years of share price growth, Aehr Test Systems moved from a loss to profitability. Sometimes, the start of profitability is a major inflection point that can signal fast earnings growth to come, which in turn justifies very strong share price gains.

The company's earnings per share (over time) is depicted in the image below (click to see the exact numbers).

It's good to see that there was some significant insider buying in the last three months. That's a positive. On the other hand, we think the revenue and earnings trends are much more meaningful measures of the business. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

A Different Perspective

Aehr Test Systems shareholders are down 64% for the year, but the market itself is up 27%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Longer term investors wouldn't be so upset, since they would have made 61%, each year, over five years. If the fundamental data continues to indicate long term sustainable growth, the current sell-off could be an opportunity worth considering. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. Case in point: We've spotted 3 warning signs for Aehr Test Systems you should be aware of, and 1 of them is significant.

There are plenty of other companies that have insiders buying up shares. You probably do not want to miss this free list of undervalued small cap companies that insiders are buying.

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on American exchanges.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

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.