The most you can lose on any stock (assuming you don't use leverage) is 100% of your money. But when you pick a company that is really flourishing, you can make more than 100%. To wit, the ATI Inc. (NYSE:ATI) share price has flown 266% in the last three years. That sort of return is as solid as granite. It's also up 11% in about a month. We note that ATI reported its financial results recently; luckily, you can catch up on the latest revenue and profit numbers in our company report.

On the back of a solid 7-day performance, let's check what role the company's fundamentals have played in driving long term shareholder returns.

While markets are a powerful pricing mechanism, share prices reflect investor sentiment, not just underlying business performance. One flawed but reasonable way to assess how sentiment around a company has changed is to compare the earnings per share (EPS) with the share price.

During three years of share price growth, ATI moved from a loss to profitability. Given the importance of this milestone, it's not overly surprising that the share price has increased strongly.

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

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized companies. It's always worth keeping an eye on CEO pay, but a more important question is whether the company will grow earnings throughout the years. Dive deeper into the earnings by checking this interactive graph of ATI's earnings, revenue and cash flow.

A Different Perspective

We're pleased to report that ATI shareholders have received a total shareholder return of 54% over one year. Since the one-year TSR is better than the five-year TSR (the latter coming in at 28% per year), it would seem that the stock's performance has improved in recent times. Someone with an optimistic perspective could view the recent improvement in TSR as indicating that the business itself is getting better with time. It's always interesting to track share price performance over the longer term. But to understand ATI better, we need to consider many other factors. Even so, be aware that ATI is showing 1 warning sign in our investment analysis , you should know about...

We will like ATI better if we see some big insider buys. While we wait, check out this free list of undervalued stocks (mostly small caps) with considerable, recent, 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.