A thirteen-year-old with a questionnaire is an awkward proposition for a school. Teachers generally expect to administer the tests. In 1967, Mark Penn reversed the arrangement, surveying the faculty at Horace Mann on civil rights and finding them more liberal than the country at large. It was an early encounter with a problem that would occupy him for decades: the people immediately around you may be a poor guide to everyone else.
Penn was born in New York in 1954 and grew up in Riverdale. His later career would take him into presidential campaigns, public relations, Microsoft’s senior leadership and the ownership of advertising businesses. The settings changed rather more than the basic activity. He kept asking people questions, sorting their answers and advising someone with a consequential decision to make.
Today, as chairman and CEO of Stagwell, he is trying to bring that habit into an advertising industry reorganizing itself around artificial intelligence. His story offers a useful way to think about the subject without beginning with a robot. Begin with the wait for an answer.
The morning after mattered
Penn studied political science at Harvard and graduated in 1976. He and Doug Schoen, his Harvard roommate, founded their polling firm in 1975. Columbia Law School followed, although Penn’s professional life was already accelerating outside the classroom. The young partners took on polling for Ed Koch’s bid to become mayor of New York.
During the 1977 campaign, tabulating a survey through a mainframe and punch cards was too slow for the decisions Penn wanted to inform. He bought a microcomputer kit and wrote a program to compile results more quickly. The campaign could test messages and evaluate tactics overnight. Koch beat Mario Cuomo, and Penn had acquired something more durable than one successful client: a practical demonstration that speed could change the usefulness of research.
A finding that arrives after a decision has been made is an interesting souvenir. A finding that arrives beforehand can alter the decision. That difference explains much of Penn’s subsequent movement between politics and commerce. The computer was valuable because it shortened a human process. Its glamour was incidental, which was fortunate for a machine assembled from a kit.
A shorter wait gave the campaign another chance to respond.
A voter with a life outside politics
By the time Penn was working for Bill Clinton, the question had become more complicated than which candidate a respondent preferred. What kind of life did that person lead? Which concerns survived the trip from the kitchen table to the voting booth? The label associated with Penn’s work on Clinton’s 1996 reelection campaign, “soccer moms,” stuck because it supplied an everyday picture alongside a political calculation.
The name was tidy. The implications were less so. A person’s political preferences could sit alongside family routines, attitudes and competing priorities. Broad demographic categories could conceal useful differences. Penn’s work helped make those differences part of campaign strategy, with polling reaching deeply into Clinton’s policy development and public presentation.
He worked as Clinton’s White House pollster for six years. He later advised Hillary Clinton’s successful New York Senate campaigns and her 2008 presidential bid, and his international clients included Tony Blair. These were relationships in which research had a seat close to power. They also made the researcher a participant in decisions, with all the arguments and accountability that participation brings.
When two client lists collided
That proximity had a cost. Penn left Hillary Clinton’s chief strategist role in April 2008 over Colombia trade work conflicting with her position.
The episode belongs in the story because Penn’s career repeatedly crossed the boundary between political advice and corporate representation. The same breadth that made his experience attractive could create competing obligations. A message can test well and still leave its messenger in trouble. Public judgment includes the circumstances in which advice is given, as well as the advice itself.
His political positioning also changed. He later criticized the Mueller investigation and Democratic efforts to impeach Donald Trump, and met Trump to discuss reelection without joining the campaign as an adviser. A biography that freezes Penn as a Clinton-era Democratic strategist misses that later turn. His continuing public commentary makes him a political voice as well as a business executive.
The small group hiding inside the big number
In 2007, Penn and E. Kinney Zalesne published Microtrends: The Small Forces Behind Tomorrow’s Big Changes. The premise carried his polling approach into a book: relatively small groups, if their behavior was changing in consequential ways, could influence markets and culture. The national average might be respectable, legible and late to the interesting part.
The appeal is easy to understand. An entrepreneur does not necessarily need a whole country to want something. A concentrated group can provide a market, an audience or the beginnings of a movement. Penn’s book encouraged readers to examine the smaller populations within a society before treating that society as one customer with one opinion.
Microtrends Squared, published in 2018 with Meredith Fineman, returned to the idea through fifty trends. Its subjects included online influence, the gig economy and changing political groups. In an interview that year, Penn described society as “more like an Impressionist painting.” The comparison suits a pollster: the picture depends on individual dots, and stepping backward is only one way to inspect it.
“Society today is more like an Impressionist painting.”
Mark Penn, Rule Breaker Investing interview, 2018
The books also expose the difficulty of the exercise. Finding a group and explaining its importance are separate tasks. A memorable label can help readers see a pattern; it can also make the pattern seem more settled than it is. Penn’s career has been spent in that space between the count and the interpretation, where numbers require judgment and judgment attracts disagreement.
From advising the company to running the strategy
Penn’s corporate work eventually put him inside Microsoft. He joined as an executive in 2012 after years as a consultant, and in March 2014 Satya Nadella appointed him executive vice president and chief strategy officer. The role included evaluating core strategic questions across products, value propositions and investments, alongside competitive research and analysis.
That remit helps explain his later business. Advertising sits within a much larger set of decisions about what a company offers and why a customer should choose it. At Microsoft, Penn’s job reached beyond selecting words for a campaign. It involved the underlying offer, the competitors and the company’s allocation of attention and resources.
He had also been CEO of Burson-Marsteller and had built Penn Schoen Berland before its sale to WPP. Together, those experiences put polling, communications and company management on the same résumé. By 2015, Penn was ready to assemble businesses around his own view of how marketing should work.
A collection becomes a company
Stagwell began in 2015. Early investor Steve Ballmer provided a connection back to Microsoft, while the acquisitions gave Penn a new sort of audience: company founders whose businesses he wanted to bring into a network. By 2018, Stagwell had completed seventeen investments, and AlpInvest backed it through a $260 million transaction.
Penn’s explanation of the acquisition approach was unusually zoological. In a 2021 presentation, he called it a “Noah’s Ark approach,” describing one or at most two businesses in the same marketing subcategories. The intended relationship among the businesses was cooperative. An ark with every passenger trying to sell the captain a separate deck would have presented obvious administrative difficulties.
In 2019, he became chairman and CEO of MDC Partners. In August 2021, its combination with the Stagwell Group created Stagwell Inc. Digital services and a creative agency network were now part of the same public company. The recurring problem was organizational: how to make different specialties useful together to a client.
Penn and Schoen launch a polling firm.
Penn founds the Stagwell Group.
The MDC combination creates Stagwell Inc.
The next answer is supposed to arrive faster
The current version of Penn’s speed problem involves marketing systems. Stagwell’s November 2025 partnership announcement with Palantir described a platform combining Foundry, Code and Theory’s orchestration software and the Marketing Cloud’s data. The proposal is to connect information with the work of targeting and executing campaigns. Penn has spoken about potentially substantial revenue from the product; that remains an ambition.
He has simultaneously defended the value of human creativity. His announced Cannes Lions session in June 2025 carried the title “The Human Touch: Creativity Can’t Be Automated,” with United Airlines’ Maggie Schmerin and 72andSunny’s Evin Shutt. The presence of both positions in his public agenda matters. Faster machinery still needs a worthwhile message to carry.
He has made another bet on an audience frequently treated with caution: news readers. Stagwell hosted its inaugural NewsFronts in October 2025, bringing publishers together with brands and media leaders. That month it also announced a 35% ownership position in Real Clear Holdings. Penn’s interest in news therefore reaches from public argument into invested capital.
The July 30, 2026 results provide a more immediate test of the business. Stagwell reported second-quarter revenue of $786 million, up 11%, and organic net revenue growth of 5%. It also reported an $8 million net loss attributable to common shareholders. Growth and profitability are different questions, even when they appear in the same announcement.
The company’s target of $5 billion in annual revenue by the end of 2029 supplies the next scale of Penn’s aspiration. Reaching it will require customers, execution and results. A target can focus a company; it cannot answer on the company’s behalf.
Penn has also donated polling materials to George Washington University, giving researchers a record of the questions behind political decisions. There is something fitting about that afterlife. An answer once delivered urgently to a president becomes a question examined slowly by a historian. Across both settings, the useful habit is the one Penn began at school: ask what people think before deciding that you already know.