Shares of Urban Outfitters (URBN) were declining by 9.6% to $16.48 on Thursday morning, after the retailer warned that the decline in comparable retail sales has increased in the fiscal 2018 second quarter. The company issued the warning in an SEC filing.

"Thus far during the second quarter of fiscal 2018, comparable retail segment net sales are high single-digit negative," Urban Outfitters said in the filing.

The issues Urban Outfitters is having showcases the trouble in the brick and mortar retail segment as consumers are doing the bulk of their retail shopping online.

Click here for the latest business headlines.

Retail's downturn giving you the blues? Jim Cramer has a list of retailers that are currently oversold, giving investors a leg up one of the market's most volatile sectors.

More from Stocks

Tesla: What Are Wall Street's Best Analysts Saying Now?

Tesla: What Are Wall Street's Best Analysts Saying Now?

In Trump Era, Managing JPMorgan Is As Unpredictable As a Midnight Tweet

In Trump Era, Managing JPMorgan Is As Unpredictable As a Midnight Tweet

Wall Street, European Stocks Edge Lower Ahead of Trump-Putin Summit in Helsinki

Wall Street, European Stocks Edge Lower Ahead of Trump-Putin Summit in Helsinki

Xiaomi Has Much to Prove After a Tepid IPO

Xiaomi Has Much to Prove After a Tepid IPO

Trump-Putin Showdown Is a Sideshow. It's All About Netflix Earnings

Trump-Putin Showdown Is a Sideshow. It's All About Netflix Earnings