Natural Alternatives International, Inc. (NASDAQ:NAII) shares have retraced a considerable 27% in the last month, reversing a fair amount of their solid recent performance. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 16% in that time.

Following the heavy fall in price, Natural Alternatives International may be sending bullish signals at the moment with its price-to-sales (or "P/S") ratio of 0.2x, since almost half of all companies in the Personal Products industry in the United States have P/S ratios greater than 1x and even P/S higher than 3x are not unusual. However, the P/S might be low for a reason and it requires further investigation to determine if it's justified.

What Does Natural Alternatives International's Recent Performance Look Like?

The revenue growth achieved at Natural Alternatives International over the last year would be more than acceptable for most companies. Perhaps the market is expecting this acceptable revenue performance to take a dive, which has kept the P/S suppressed. Those who are bullish on Natural Alternatives International will be hoping that this isn't the case, so that they can pick up the stock at a lower valuation.

Want the full picture on earnings, revenue and cash flow for the company? Then our free report on Natural Alternatives International will help you shine a light on its historical performance.

What Are Revenue Growth Metrics Telling Us About The Low P/S?

Natural Alternatives International's P/S ratio would be typical for a company that's only expected to deliver limited growth, and importantly, perform worse than the industry.

Taking a look back first, we see that the company grew revenue by an impressive 19% last year. Despite this strong recent growth, it's still struggling to catch up as its three-year revenue frustratingly shrank by 24% overall. So unfortunately, we have to acknowledge that the company has not done a great job of growing revenues over that time.

Weighing that medium-term revenue trajectory against the broader industry's one-year forecast for expansion of 4.6% shows it's an unpleasant look.

In light of this, it's understandable that Natural Alternatives International's P/S would sit below the majority of other companies. However, we think shrinking revenues are unlikely to lead to a stable P/S over the longer term, which could set up shareholders for future disappointment. There's potential for the P/S to fall to even lower levels if the company doesn't improve its top-line growth.

What Does Natural Alternatives International's P/S Mean For Investors?

Natural Alternatives International's P/S has taken a dip along with its share price. Using the price-to-sales ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

It's no surprise that Natural Alternatives International maintains its low P/S off the back of its sliding revenue over the medium-term. At this stage investors feel the potential for an improvement in revenue isn't great enough to justify a higher P/S ratio. Given the current circumstances, it seems unlikely that the share price will experience any significant movement in either direction in the near future if recent medium-term revenue trends persist.

If these risks are making you reconsider your opinion on Natural Alternatives International, explore our interactive list of high quality stocks to get an idea of what else is out there.

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.