KEY POINTS
  • Untuckit has hired investment bank Morgan Stanley to raise money to fuel growth, people familiar with the matter tell CNBC.
  • Untuckit hopes to fetch a valuation of more than $600 million, these people say. 
  • Untuckit has roughly $150 million in sales and is profitable.
Shoppers browse clothing inside an Untuckit store at the King of Prussia mall in King of Prussia, Pennsylvania, Oct. 20, 2018.

Men have worn untucked shirts for years. When a company came along to sell only shirts that are designed to be untucked – not surprisingly that market turned out to be pretty lucrative.

That company, known as Untuckit, has hired a prominent investment bank to raise money and help fuel its growth, according to people familiar with the situation. Untuckit is seeking a deal that will value it at more than $600 million and has Morgan Stanley out looking for the funds.