NEW YORK (CNN/Money) - Netflix Inc., a provider of online DVD rentals, turned in a winning first day, gaining nearly 12 percent while Thursday's two other initial public offerings, Altiris Inc. and EON Labs Inc., did not fair as well.

Shares of Netflix (NFLX: Research, Estimates) closed at $16.75, adding $1.75 to its $15 IPO price.

The stock of EON Labs (ELAB: Research, Estimates), a pharmaceutical company, ended at $15.05, 5 cents above its $15 offer price. But software provider Altiris (ATRS: Research, Estimates) fared worse, dropping $1.13 from its $10 IPO price, to $8.87, making it a broken deal.

The weak performance follows the sputtering debut by Liquidmetal Technologies on Wednesday. Liquidmetal (LQMT: Research, Estimates) eked out a gain Wednesday, adding only 3 cents to close at $15.03. But on Thursday, the metal alloy maker did break when it fell to $14.90, 10 cents below its $15 IPO price.

Netflix raised $82.5 million late Wednesday after pricing its offering at the top of its expected range, selling 5.5 million shares at $15 each via Merrill Lynch.

The Los Gatos, Calif.-based company allows its 600,000 subscribers to order DVDs through its web site, which are then sent to them through the mail. Netflix has a library of more than 11,500 movie, television and other filmed entertainment titles.

With a standard package, customers can order as many DVDs as they want for $19.95 a month and are not charged late fees, shipping charges or have a due date to return the item. However, customers can have only three DVDs out at one time.

Netflix is not profitable with an accumulated deficit of $141.8 million. The company had $4 million in operating losses on $30.5 million in revenue for the quarter ended March 31 on $20.4 million in operating losses on $17.1 million in revenue for the same time period the year before.

Separately, EON Labs raised $147 million Wednesday when it priced 9.8 million shares at $15 per share through lead underwriters Credit Suisse First Boston and Goldman Sachs.

Laurelton, N.Y.-based EON has marketed more than 90 generic pharmaceutical products, including drugs to treat obsessive-compulsive disorder, arthritis, cancer and depression. Forty percent of the company's sales come from drug wholesalers, while pharmacy chains account for 30 percent. EON's top customers include McKesson Corp., AmerisourceBergen Corp., and Cardinal Health Inc.

Lastly, Altiris sold 5 million shares at $10 each via lead underwriter Credit Suisse First Boston.

The Lindon, Utah-based company offers software that helps companies manage their information technology environments.