Portfolio Team

Penguin: Because Reading Matters

Lydia Yadi, Senior Editor

Lydia has spent the last six years at Penguin Business, formerly Portfolio UK, working with top academics, journalists, and entrepreneurs in London. In that time, she has published six Sunday Times bestsellers and published American authors like Cal Newport, John Doerr, and Marie Forleo in the UK. At Portfolio, she’s excited to commission practical books on success,…

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Megan Wenerstrom, Editorial Assistant

Megan Wenerstrom joined Portfolio in May 2022, after five years as a high school English teacher. She is interested in politics, history, education policy, and compelling investigations into the worlds of business, finance, and technology.

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Veronica Velasco, Editorial Assistant

Veronica Velasco joined Portfolio in September 2021. She is repeatedly drawn towards nonfiction that aims to help us better connect with each other, professionally and personally, through idea-driven books and compelling narratives. With a particular interest in journalism, politics, psychology, sociology, feminism, and self-help, she is eager to seek out books with stories that aim…

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Kimberly Meilun, Assistant Editor

Kimberly Meilun joined Portfolio in 2019 after working in anti-financial crime consulting and criminal defense. She’s interested in acquiring books by leaders who are reforming systems and institutions, prescriptive business and personal development books by female authors with strong voices and points of view, prescriptive and inspirational books by and for ambitious creatives, and idea-driven…

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Megan McCormack, Editorial Assistant

Megan McCormack joined Portfolio in January 2021. She is interested in narrative and idea-driven nonfiction that teaches us about the human mind or human behavior in unexpected ways. Always curious and eager for new knowledge, she is drawn to learning from the experts on surprising subcultures, business scandals and corporate underbellies, and the intersection of…

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Helen Healey-Cunningham, Editor

Helen gets excited about rebellious ideas, forceful arguments, and advice that really works. Since joining Portfolio in 2017, she’s edited four New York Times bestsellers. Her areas of interest include politics, Christianity, racial and economic justice, corporate and political corruption, wealth management, entrepreneurship, communication, venture capital, and practical life skills.

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Merry Sun, Editor

Merry Sun joined Portfolio in 2015. She publishes brilliant thinkers who are on a mission to share their ideas with smart, hungry readers. Topics in economics, social psychology, finance, technology, and the food business by academics and journalists interest her most. She also acquires practical non-fiction by smart and singular voices with a bold message.…

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Noah Schwartzberg, Senior Editor

Noah joined Portfolio in 2019. He brings more than ten years of experience as an acquisition editor for McGraw-Hill, Cambridge University Press, and Fairchild Books. His areas of focus include business, economics, finance and investing, and politics. His authors run the gamut from generals to journalists, economists to entrepreneurs. He’s especially interested in stories that shine…

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Trish Daly, Senior Editor

Trish Daly joined Portfolio in 2019 with a focus on narrative and platform-driven nonfiction, especially business and economics, current affairs, big ideas, journalism, and the occasional memoir. She began her career at HarperCollins, where she acquired Margot Lee Shetterly’s Hidden Figures, which was adapted into an Oscar-nominated film, and later worked at Little, Brown with the…

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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.

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