These days it's easy to simply buy an index fund, and your returns should (roughly) match the market. But one can do better than that by picking better than average stocks (as part of a diversified portfolio). For example, the NiSource Inc. (NYSE:NI) share price is up 37% in the last 1 year, clearly besting the market return of around 28% (not including dividends). So that should have shareholders smiling. Also impressive, the stock is up 36% over three years, making long term shareholders happy, too.

So let's assess the underlying fundamentals over the last 1 year and see if they've moved in lock-step with shareholder returns.

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. 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 the last year NiSource grew its earnings per share (EPS) by 3.4%. The share price gain of 37% certainly outpaced the EPS growth. So it's fair to assume the market has a higher opinion of the business than it a year ago.

You can see below how EPS has changed over time (discover the exact values by clicking on the image).

It might be well worthwhile taking a look at our free report on NiSource's earnings, revenue and cash flow.

What About Dividends?

As well as measuring the share price return, investors should also consider the total shareholder return (TSR). The TSR incorporates the value of any spin-offs or discounted capital raisings, along with any dividends, based on the assumption that the dividends are reinvested. It's fair to say that the TSR gives a more complete picture for stocks that pay a dividend. In the case of NiSource, it has a TSR of 42% for the last 1 year. That exceeds its share price return that we previously mentioned. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

We're pleased to report that NiSource shareholders have received a total shareholder return of 42% over one year. Of course, that includes the dividend. Since the one-year TSR is better than the five-year TSR (the latter coming in at 10% 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. 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. Even so, be aware that NiSource is showing 3 warning signs in our investment analysis , and 1 of those shouldn't be ignored...

Of course, you might find a fantastic investment by looking elsewhere. So take a peek at this free list of companies we expect will grow earnings.

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.