Blackstones SeaWorld raises IPO size to $500 mln

April 8 | Mon Apr 8, 2013 11:59am EDT April 8 (Reuters) - Blackstone Group's SeaWorld Parks and Entertainment increased the size of its planned initial public offering to $500 million from $100 million. Reuters reported earlier this year the company had held early talks with interested parties to explore whether a private sale could fetch more than an offering. SeaWorld, which is ...