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Companies always gain a lot of hype and attention before an IPO. But more often than not, the only beneficiaries of this hype are the handful of investors who get the stock offer price and immediately flip the stock on the first day of trading.

Investors who shelled out for Pandora shares during its first day of trading have taken a 12% hit on their investment.

Ahead of Groupon's oversubscribed IPO, we've put together a list of 12 companies with over $1 billion market cap, that have flagged since floating their shares.

Sometimes the company is just overhyped. Sometimes it's just poor market timing. But these huge IPO's have been losers for new investors.

NOTE: Most investors are unable to get an IPO at the offer price. As such, we rank the IPOs to-date performance based on the closing price on the first trading day.