What percentage of ADP does Bill Ackman own?

By Matteo Drelli. Updated Sep 6, 2023

Understanding what percentage of ADP does Bill Ackman own is tricky because ownership can change over time. I'm here to provide you with the most respected and current info, based on available data.

As of July 2019, Bill Ackman has exited his investment in ADP completely. He previously held an 8.3% stake in August 2017, reduced it to 7.2% in April 2018, but as of now, he owns 0% of ADP.