Complex sentence: William A. Ackman, more commonly known as Bill Ackman, (born May 11,1966) is the founder and CEO of hedge fund Pershing Square Capital Management LP.
Split into simpler sentences: William A. Ackman, more commonly known as Bill Ackman, (born May 11,1966) is an American hedge fund manager. He is the founder and CEO of hedge fund Pershing Square Capital Management LP.