Updates
** Lobbying firm Public Policy Holding's PPHC.O shares fall below IPO price in Nasdaq debut
** Stock opened for trading at $12.19 apiece, valuing the firm at $347.8 million
** PPHC and some of its backers sold 4.15 million shares at $12.25 apiece in U.S. IPO to raise roughly $50.8 million
** Stock fell as low as $11.69, last down 2.2% at 11.97
** Oppenheimer and Canaccord Genuity were lead bookrunning managers for offering
** PPHC already trades on the AIM market of the London Stock Exchange
** Its portfolio of lobbying firms includes Crossroads Strategies and Forbes Tate Partners
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com;))