Owners of Markit, the Wall Street financial data provider, raised $1.3 billion in a larger-than-expected initial public offering of shares, according to people familiar with the deal.

The offering priced at $24 per share, in the middle of the expected $23 to $25-a-share range, the people said. But the size of the deal was increased to 53.5 million shares from an expected 45.7 million shares, and a larger amount was raised as a result, they added.