Texas firms are bulking up in the Big Apple, and it’s paying off on the bottom line.

Of the $2.5 billion generated by the 25 highest-grossing firms in Texas, the top four firms raked in $1.1 billion alone. This represents an average increase of $30.6 million in revenue in fiscal 1998 (12.7 percent) among Houston’s Big Three � Fulbright & Jaworski, Vinson & Elkins and Baker & Botts � and Dallas’ Akin, Gump, Strauss, Hauer & Feld, much of it attributable to the firms’ burgeoning New York offices.