It's nice to see the Stellar Bancorp, Inc. (NYSE:STEL) share price up 10% in a week. But that is minimal compensation for the share price under-performance over the last year. In fact the stock is down 34% in the last year, well below the market return.

Although the past week has been more reassuring for shareholders, they're still in the red over the last year, so let's see if the underlying business has been responsible for the decline.

See our latest analysis for Stellar Bancorp

While the efficient markets hypothesis continues to be taught by some, it has been proven that markets are over-reactive dynamic systems, and investors are not always rational. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

Unhappily, Stellar Bancorp had to report a 43% decline in EPS over the last year. This fall in the EPS is significantly worse than the 34% the share price fall. So the market may not be too worried about the EPS figure, at the moment -- or it may have expected earnings to drop faster.

The graphic below depicts how EPS has changed over time (unveil the exact values by clicking on the image).

We consider it positive that insiders have made significant purchases in the last year. Having said that, most people consider earnings and revenue growth trends to be a more meaningful guide to the business. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

A Different Perspective

Investors in Stellar Bancorp had a tough year, with a total loss of 33% (including dividends), against a market gain of about 16%. 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. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 4% per year over five years. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. 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. Take risks, for example - Stellar Bancorp has 2 warning signs (and 1 which makes us a bit uncomfortable) we think you should know about.

Stellar Bancorp is not the only stock insiders are buying. So take a peek at this free list of growing companies with insider buying.

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

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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.