Since Portfolio was founded by Adrian Zackheim in 2001, it has emerged as a major force in nonfiction publishing for ambitious people. We connect readers with powerful ideas that inform and improve their lives, within the workplace and beyond. Portfolio authors are innovators, entrepreneurs, and experts who aren’t afraid to take risks and change the world. We strive to produce original books in fields such as technology, economics, entrepreneurship, biography, and investigative journalism, with a focus on educating and inspiring a new generation of innovative leaders.

Some of Portfolio’s bestsellers include Start with Why by Simon Sinek, #Girlboss by Sophia Amoruso, The Obstacle Is The Way by Ryan Holiday, Team of Teams by General Stanley McChrystal, This Is Marketing by Seth Godin, The Bullet Journal Method by Ryder Carroll, Brotopia by Emily Chang, and The Four by Scott Galloway.

Meet Portfolio

Adrian Zackheim

Adrian Zackheim

Founder, President, and Publisher

Adrian Zackheim joined Penguin Group in September 2001 as Founder and Publisher of Portfolio. He then took on the additional challenge of starting Sentinel in April 2003. In 2018, he announced the addition of another new imprint to the group: The Optimism Press, in collaboration with Simon Sinek.

Previously, he was the Associate Publisher and Editor-in-Chief of HarperInformation, a division of HarperCollins that included HarperBusiness. His editorial career has also included positions at William Morrow, Doubleday, and St. Martin’s Press, and his first job was as School and Library Publicity Assistant at G.P. Putnam’s Sons, which was then a privately held small publishing company. He later moved to Putnam’s Editorial department under the leadership of Editor-in-Chief Phyllis Grann.

Among the many bestselling books he edited and published before joining Penguin Group were Good to Great by Jim Collins; Die Broke by Stephen Pollan and Mark Levine; The Dilbert Principle by Scott Adams; The HP Way by David Packard; and Swim with the Sharks without being Eaten Alive by Harvey Mackay.

Niki Papadopoulos

Niki Papadopoulos

Editorial Director

Niki Papadopoulos joined Portfolio in 2011 as a Senior Editor, and is a passionate advocate for business as a tool for empowerment, innovation, and social good. In addition to overseeing general acquisition strategy for the Portfolio imprint, she acquires and edits a wide range of commercial nonfiction for ambitious people, from idea-driven business books to narrative, biography, memoir, investigative journalism, and self-help. In the last decade she has published twelve New York Times bestsellers and seventeen Wall Street Journal bestsellers, including This Is Marketing by Seth Godin; The Obstacle Is the Way by Ryan Holiday; The Four by Scott Galloway; Captivate by Vanessa Van Edwards; Thinking in Bets by Annie Duke; The Death of Money by James Rickards; Hooked by Nir Eyal; and American Kingpin by Nick Bilton.She tweets about grammar, dogs, and what happens to authors who don’t turn their manuscripts in on time at @niki_pop.

Bria Sandford

Executive Editor

Bria Sandford joined Portfolio in 2012. She enjoys editing leadership narratives, economic policy, geopolitics, history, and prescriptive career guides. Her bestselling authors include retired four-star General Stanley McChrystal, political scientist Ian Bremmer, and career advice guru Jon Acuff.  She tweets at @blsandford.

Meet More

Leah Trouwborst


Leah Trouwborst joined Portfolio in 2015. She has edited Bullet Journal founder Ryder Carroll’s New York Times bestselling guide The Bullet Journal Method; Julie Zhuo’s The Making of a Manager, Liz Fosslien and Mollie West Duffy’s No Hard Feelings, Scott Adams Win Bigly, and Marie Forleo’s forthcoming Everything Is Figureoutable. She’s looking forward to editing more fresh voices, talented storytellers, and rigorous thinkers in the idea-driven and prescriptive nonfiction spaces, including business, economics, finance, technology, behavioral science, self-help, memoir, biography, and investigative journalism.

Kaushik Viswanath

Associate Editor

Kaushik Viswanath joined Portfolio in 2015 as an editorial assistant. He likes to edit prescriptive and idea-driven books on entrepreneurship, sales, marketing, business strategy, technology, and economics. His authors include Cofounder/CEO of VC firm 1776 Evan Burfield, small-business growth expert Mike Michalowicz, and Anthony Iannarino of The Sales Blog. When he’s not editing or reading or writing or singing, you can find him lurking on Twitter @kozemoze.

Merry Sun

Associate Editor

Merry Sun joined Portfolio as an editorial assistant in 2015 and is now an associate editor. She particularly enjoys editing idea-driven books about counterintuitive concepts in economics, finance, behavioral science, and technology. Her favorite authors have provocative ideas about the way the world works, and a burning passion to spread those ideas to ambitious readers. Her authors include Harvard Business School professor Laura Huang, founder of Serious Eats Ed Levine, Columbia Business School professor Michael Morris, Wall Street Journal reporter Gregory Zuckerman, New York magazine writer Melissa Dahl, and CNET cofounder and former ambassador to the UK Matthew Barzun. She has a soft spot for books about food and the food industry and very strong opinions about where to go for lunch.