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Are Inspire Medical Systems, Inc.'s (NYSE:INSP) Fundamentals Good Enough to Warrant Buying Given The Stock's Recent Weakness?
Inspire Medical Systems (NYSE:INSP) has had a rough three months with its share price down 16%. However, stock prices are usually driven by a company’s financials over the long term, which in this case look pretty respectable. Specifically, we decided to study Inspire Medical Systems' ROE in this article.
Return on equity or ROE is an important factor to be considered by a shareholder because it tells them how effectively their capital is being reinvested. In short, ROE shows the profit each dollar generates with respect to its shareholder investments.
How To Calculate Return On Equity?
The formula for ROE is:
Return on Equity = Net Profit (from continuing operations) ÷ Shareholders' Equity
So, based on the above formula, the ROE for Inspire Medical Systems is:
10% = US$67m ÷ US$636m (Based on the trailing twelve months to March 2025).
The 'return' is the profit over the last twelve months. One way to conceptualize this is that for each $1 of shareholders' capital it has, the company made $0.10 in profit.
See our latest analysis for Inspire Medical Systems
What Is The Relationship Between ROE And Earnings Growth?
We have already established that ROE serves as an efficient profit-generating gauge for a company's future earnings. Depending on how much of these profits the company reinvests or "retains", and how effectively it does so, we are then able to assess a company’s earnings growth potential. Assuming everything else remains unchanged, the higher the ROE and profit retention, the higher the growth rate of a company compared to companies that don't necessarily bear these characteristics.
Inspire Medical Systems' Earnings Growth And 10% ROE
On the face of it, Inspire Medical Systems' ROE is not much to talk about. However, given that the company's ROE is similar to the average industry ROE of 12%, we may spare it some thought. Moreover, we are quite pleased to see that Inspire Medical Systems' net income grew significantly at a rate of 45% over the last five years. Given the slightly low ROE, it is likely that there could be some other aspects that are driving this growth. For example, it is possible that the company's management has made some good strategic decisions, or that the company has a low payout ratio.
Next, on comparing with the industry net income growth, we found that Inspire Medical Systems' growth is quite high when compared to the industry average growth of 15% in the same period, which is great to see.
Earnings growth is a huge factor in stock valuation. What investors need to determine next is if the expected earnings growth, or the lack of it, is already built into the share price. Doing so will help them establish if the stock's future looks promising or ominous. Is INSP fairly valued? This infographic on the company's intrinsic value has everything you need to know.
Is Inspire Medical Systems Efficiently Re-investing Its Profits?
Inspire Medical Systems doesn't pay any regular dividends currently which essentially means that it has been reinvesting all of its profits into the business. This definitely contributes to the high earnings growth number that we discussed above.

Conclusion
Overall, we feel that Inspire Medical Systems certainly does have some positive factors to consider. Despite its low rate of return, the fact that the company reinvests a very high portion of its profits into its business, no doubt contributed to its high earnings growth. Having said that, the company's earnings growth is expected to slow down, as forecasted in the current analyst estimates. To know more about the company's future earnings growth forecasts take a look at this free report on analyst forecasts for the company to find out more.
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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.
About NYSE:INSP
Inspire Medical Systems
A medical technology company, focuses on the development and commercialization of minimally invasive solutions for patients with obstructive sleep apnea (OSA) in the United States and internationally.
Flawless balance sheet with solid track record.
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