Aging startup Ancestry.com finally made its Nasdaq trade debut, but its performance was certainly no return to the heady days of its early roots in the late 1990s.

Investors buoyed shares $0.70, or 5 percent, at $14.20 by close of trading Thursday. The company raised $100 million in the initial public offering. Ancestry.com and its investors sold 7.41 million shares at $13.50 apiece, bringing the company’s market capitalization to $572 million post-sale.

What’s notable about the IPO is that Ancestry.com marks yet another private equity-backed offering. Among selling shareholders were W Capital Partners and Spectrum Equity Investors, the later holding about 10 percent of the company, according to U.S. Securities and Exchange Commission documents.

Provo, Utah, Ancestry.com boasts the world’s largest Web destination for tracking family histories. The company reported over 1 million paying subscribers worldwide September 30, 2009, according to SEC documents.