One of Wall Street’s most influential figures, BlackRock Inc.’s Larry Fink, signaled his support for Angela Merkel as Germany’s chancellor prepares to campaign for re-election this fall, saying she has provided “moral leadership” to the world. “I sincerely hope that Germany chooses to continue its role as a leader and stabilizing force in the world,” Fink, the chairman and chief executive officer of the world’s biggest asset manager, said in a speech Monday evening at a reception hosted by Deutsche Boerse AG in Frankfurt.