For many investors, the main point of stock picking is to generate higher returns than the overall market. But in any portfolio, there are likely to be some stocks that fall short of that benchmark. We regret to report that long term Lumentum Holdings Inc. (NASDAQ:LITE) shareholders have had that experience, with the share price dropping 49% in three years, versus a market return of about 23%.

Given the past week has been tough on shareholders, let's investigate the fundamentals and see what we can learn.

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 way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

Lumentum Holdings saw its share price decline over the three years in which its EPS also dropped, falling to a loss. Due to the loss, it's not easy to use EPS as a reliable guide to the business. However, we can say we'd expect to see a falling share price in this scenario.

You can see how EPS has changed over time in the image below (click on the chart to see the exact values).

Dive deeper into Lumentum Holdings' key metrics by checking this interactive graph of Lumentum Holdings's earnings, revenue and cash flow.

A Different Perspective

Investors in Lumentum Holdings had a tough year, with a total loss of 12%, against a market gain of about 29%. 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. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 4% over the last half decade. 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. For instance, we've identified 2 warning signs for Lumentum Holdings (1 is potentially serious) that you should be aware of.

We will like Lumentum Holdings better if we see some big insider buys. While we wait, check out this free list of growing companies 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.