Shares of Blue Apron APRN fell 9% in morning trading on Monday after news broke that Amazon.com AMZN has registered a trademark in the U.S. for a meal-kit business.Amazon has registered for a service described as, “We do the prep. You be the chef.” The service will provide “prepared food kits… ready for cooking and assembly as a meal,” according to Amazon’s trademark application, which was filed on July 6.The food kits will contain “frozen, prepared, and packaged meals,” with “meat, poultry, fish, seafood, fruit and/or vegetables and also including sauces or seasonings, ready for cooking and assembly as a meal.”Amazon already offers meal-kits from third-party vendors, such as Tyson Foods’ TSN Tyson Tastemakers and Sequential Brands Group Inc.’s SQBG Martha Stewart brand, Marley Spoon. Amazon has also experimented with food delivery through AmazonFresh, a grocery delivery service offered to Prime members for a monthly fee of $14.99.This new venture by Amazon to sell their own brand of meal-kits could threaten Blue Apron’s place as the largest meal-kit provider in the U.S. The biggest complaint among meal-kit subscribers is the high price, which Amazon could potentially solve.Blue Apron stock has been consistently threatened by Amazon since its IPO last month because of Amazon’s acquisition of Whole Foods WFM. The start-up’s issue price was $10 on June 29th, valuing the company at $1.9 billion, which was down considerably from its original estimation of $3 billion.Since its IPO, Blue Apron stock has fallen nearly 30%. Investors have worried about its ability to generate a profit. Today, the stock seems to be headed to a new all-time low.APRN remains a Zacks Rank #3 (Hold), with a Value and Growth score of ‘D.’ The company is set to release its next quarterly earnings on August 10 before market open.Today's Stocks from Zacks' Hottest StrategiesIt's hard to believe, even for us at Zacks. But while the market gained +18.8% from 2016 - Q1 2017, our top stock-picking screens have returned +157.0%, +128.0%, +97.8%, +94.7%, and +90.2% respectively.And this outperformance has not just been a recent phenomenon. Over the years it has been remarkably consistent. From 2000 - Q1 2017, the composite yearly average gain for these strategies has beaten the market more than 11X over. Maybe even more remarkable is the fact that we're willing to share their latest stocks with you without cost or obligation. See Them Free>>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Amazon.com, Inc. (AMZN): Free Stock Analysis Report Tyson Foods, Inc. (TSN): Free Stock Analysis Report Whole Foods Market, Inc. (WFM): Free Stock Analysis Report Sequential Brands Group, Inc. (SQBG): Free Stock Analysis Report BLUE APRON HLDG (APRN): Get Free Report To read this article on Zacks.com click here. Zacks Investment Research