NEW YORK (CNNMoney.com) -- Indian outsourcing firm WNS Holdings intends to raise about $74 million through an initial public offering, according to a filing made with the Securities and Exchange Commission Monday.

About 10.4 million American Depositary Shares will be offered to underwriters - 4.47 million from the company and about 5.96 million from existing shareholders, according to the filing.

WNS estimates its shares to price between $18 to $20 a share and said it expects to raise about $73.9 million from the offering, after the deduction of underwriting costs.

The Mumbai-based company provides offshore business outsourcing services to customers in Europe and North America. Some of its biggest clients include Travelocity, British grocer Tesco and Virgin Atlantic Airways, according to its filing.

The company expects to list on the New York Stock Exchange under the symbol "WNS."

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