Peter Brendan Doyle is an entrepreneur who founded Horizon Kinetics Asset Management LLC, Kinetics Asset Management LLC, Horizon Kinetics LLC and Kinetics Advisers LLC. Currently, he occupies the position of Director & Vice President at FRMO Corp. Mr. Doyle is also Senior Manager-Portfolio at Horizon Kinetics LLC.

In the past Mr. Doyle occupied the position of Senior Investment Officer at Bankers Trust Co. (Des Moines, Iowa), Managing Director at Kinetics Asset Management LLC and Managing Director at Kinetics Advisers LLC.

He received an MBA from Fordham University and an undergraduate degree from St. John's University.