NEW YORK ( TheStreet) -- Over the past few years, the IPO market has seen some monster-sized offerings go public. These mega-IPOs are valued in the billions. However, the performance hasn't been even across the board, so the eternal question remains - does size matter?It isn't an easy comparison. Some of the biggest offerings have had more time on the market to improve total return like MasterCard ( MA) and Visa ( V). Both of these offerings were huge deals and both have had tremendous total returns. Facebook's ( FB) monster-sized offering, which was botched by NASDAQ, has not paid off for investors. The one thing they do have in common is institutional investors.