KEY POINTS
  • Signet Jewelers says holiday sales came up short of expectations.
  • The retailer also hints it could be closing more stores in the future.
  • The parent company of brands like Kay and Zales slashes its fourth-quarter and fiscal 2019 outlooks.
Signage for Kay Jewelers, a subsidiary of Signet Jewelers Ltd., is displayed on the exterior of a store in New York.

Signet Jewelers shares tanked more than 21 percent Thursday morning after the diamond retailer slashed its profit outlook and said holiday sales came up short of expectations. The company also hinted it could be closing more stores in the future.

The parent company of jewelry brands including Kay, Zales and Jared said sales at stores open for at least 12 months were down 1.3 percent for the nine weeks ended Jan. 5. Signet said it saw "reduced traffic during key December gifting weeks."