Shares of Melville-based Hain Celestial tumbled 15.07 percent or $3.30 to close at $18.60 on Tuesday, after a downgrade by a J.P. Morgan analyst. The stock remained roughly flat, down baout 1 percent or a quarter as of 1 p.m.

About 3.381 million of Hain shares traded as the stock fell from $21.90. Hain is now toward the lower end of its 52-week range between $14.45 and $29.42.

The company, slated to report earnings on Aug. 29, saw its shares slide after J.P. Morgan analyst Ken Goldman, downgraded the stock from neutral to underweight and lowered his price target from $23 to $18.

“To put it plainly, the company has substantial exposure to the U.K., and the potential impact from Brexit could be significantly harmful to its business there,” Jason Hall wrote on the Motley Fool,

Goldman said that the lack of a Brexit deal could damage Hain Celestial, which has a substantial amount of sales in the United Kingdom.

Some observers worry that a Brexit without a deal could plunge the United Kingdom into a recession, which would in turn hurt Hain’ Celestial's business.