Facebook went public on Friday, May 18. Although the trading was flawed (as Nasdaq admitted), the initial price action was quite typical of an IPO. Shares were offered at $38, but spiked to almost $42 shortly after hitting the secondary market. Shares closed just above the offering price. For about the last 15 years, the average level of underpricing (or first day return) has been 15%. So, in these terms, the Facebook IPO was not that successful.
Dolvin, Steven D., "Facebook IPO" (2012). All Chapters. 1.