That's odd, crunchbase says their IPO was in July of 2005.[1] According to Expedia's website, IAC acquired Expedia in August of 2003[2]. It looks like between 2000 & 2005 Expedia/IAC had acquired a number of online travel companies. My thought is that when IAC purchased Expedia it was no longer being traded publicly. In 2005 IAC rolled in the additional travel companies and put Expedia back on the public markets. [1] https://www.crunchbase.com/ipo/7451f106bd9bae69f9eb02a69f8c4... [2] http://www.expediainc.com/about/history/