Focus Minerals Limited (ASX:FML) shares have had a really impressive month, gaining 32% after a shaky period beforehand. Looking back a bit further, it's encouraging to see the stock is up 32% in the last year.

Even after such a large jump in price, Focus Minerals may still look like a strong buying opportunity at present with its price-to-sales (or "P/S") ratio of 0.9x, considering almost half of all companies in the Metals and Mining industry in Australia have P/S ratios greater than 57x and even P/S higher than 338x aren't out of the ordinary. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly reduced P/S.

See our latest analysis for Focus Minerals

What Does Focus Minerals' Recent Performance Look Like?

With revenue growth that's exceedingly strong of late, Focus Minerals has been doing very well. Perhaps the market is expecting future revenue performance to dwindle, which has kept the P/S suppressed. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

Although there are no analyst estimates available for Focus Minerals, take a look at this free data-rich visualisation to see how the company stacks up on earnings, revenue and cash flow.

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

The only time you'd be truly comfortable seeing a P/S as depressed as Focus Minerals' is when the company's growth is on track to lag the industry decidedly.

If we review the last year of revenue growth, the company posted a terrific increase of 231%. Spectacularly, three year revenue growth has ballooned by several orders of magnitude, thanks in part to the last 12 months of revenue growth. Accordingly, shareholders would have been over the moon with those medium-term rates of revenue growth.

When compared to the industry's one-year growth forecast of 258%, the most recent medium-term revenue trajectory is noticeably more alluring

With this in mind, we find it intriguing that Focus Minerals' P/S isn't as high compared to that of its industry peers. Apparently some shareholders believe the recent performance has exceeded its limits and have been accepting significantly lower selling prices.

The Final Word

Focus Minerals' recent share price jump still sees fails to bring its P/S alongside the industry median. Generally, our preference is to limit the use of the price-to-sales ratio to establishing what the market thinks about the overall health of a company.

We're very surprised to see Focus Minerals currently trading on a much lower than expected P/S since its recent three-year growth is higher than the wider industry forecast. When we see strong revenue with faster-than-industry growth, we assume there are some significant underlying risks to the company's ability to make money which is applying downwards pressure on the P/S ratio. It appears many are indeed anticipating revenue instability, because the persistence of these recent medium-term conditions would normally provide a boost to the share price.

And what about other risks? Every company has them, and we've spotted 3 warning signs for Focus Minerals (of which 2 can't be ignored!) you should know about.

If you're unsure about the strength of Focus Minerals' business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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