What happened 

Shares of Select Comfort Corp. (NASDAQ:SNBR) jumped 24.6% in April, according to data provided by S&P Global Market Intelligence, with the bulk of those gains coming after it announced a shockingly good earnings report on April 19. 

So what 

First-quarter results drove the increase in Select Comfort's stock, and the jump happened in one day. Revenue was up 12% in the quarter and net income jumped 88.6% to $24.5 million, or $0.56 per share. 

Couple sleeping on a mattress.

Image source: Getty Images.

The improvement in results comes as management prepares to launch the Sleep Number 360 smart bed, which adjusts to the user while they sleep. If the new product excites customers, its higher price point could propel a sales boost for the company.

Now what 

Shares still trade at just 21 times earnings, and if revenue continues to grow by anywhere near double-digit percentages, the stock is still a good value. Management has expanded the company's retail presence as well, which will make it easier to demonstrate the value of new products in the future. Select Comfort's shares can be volatile, but the financials continue to improve. If that trend holds, it'll keep sending shares higher. Maybe not at the same pace as the last month, but long term, the company is well positioned. 

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