BOK Financial Corporation (NASDAQ:BOKF) shareholders should be happy to see the share price up 10% in the last month. But that doesn't change the fact that the returns over the last year have been less than pleasing. In fact, the price has declined 30% in a year, falling short of the returns you could get by investing in an index fund.

Since shareholders are down over the longer term, lets look at the underlying fundamentals over the that time and see if they've been consistent with returns.

View our latest analysis for BOK Financial

To paraphrase Benjamin Graham: Over the short term the market is a voting machine, but over the long term it's a weighing machine. 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.

During the unfortunate twelve months during which the BOK Financial share price fell, it actually saw its earnings per share (EPS) improve by 34%. It could be that the share price was previously over-hyped.

It's surprising to see the share price fall so much, despite the improved EPS. So it's easy to justify a look at some other metrics.

BOK Financial's revenue is actually up 18% over the last year. Since the fundamental metrics don't readily explain the share price drop, there might be an opportunity if the market has overreacted.

The image below shows how earnings and revenue have tracked over time (if you click on the image you can see greater detail).

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. This free report showing analyst forecasts should help you form a view on BOK Financial

A Different Perspective

While the broader market gained around 16% in the last year, BOK Financial shareholders lost 28% (even including dividends). However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 1.0% over the last half decade. We realise that Baron Rothschild has said investors should "buy when there is blood on the streets", but we caution that investors should first be sure they are buying a high quality business. It's always interesting to track share price performance over the longer term. But to understand BOK Financial better, we need to consider many other factors. Case in point: We've spotted 1 warning sign for BOK Financial you should be aware of.

BOK Financial 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.