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Jeffrey Sonnenfeld

@jeffsonnenfeld.bsky.social

1.1K followers 21 following 80 posts

Yale SOM Lester Crown Professor in Practice of Management, Founder of Yale Chief Executive Leadership Institute (CELI) -- [email protected]

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Jeffrey A. Sonnenfeld is the Lester Crown Professor in the Practice of Management at Yale School of Management, and Senior Associate Dean for Leadership Studies. Sonnenfeld is best known as the founder and CEO of Chief Executive Leadership Institute (CELI), affiliated with Yale University. .. more

Business 63%

Economics 14%

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · 4d

Just out in Fortune - Dizzying deal delirium....How the AI bubble bursts

fortune.com/2025/10/07/h...

Dizzying deal delirium: How the AI bubble bursts | Fortune

At our Yale Chief Executive Leadership Institute CEO Summit in June, we heard similar admonitions from over 150 top CEOs. They've seen this before.

fortune.com

Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · 14d

Thank you!

Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · 15d

Just out in @newsweek.com - Bob Iger Deserves Credit for Handling of Kimmel Controversy

www.newsweek.com/bob-iger-des...

Bob Iger Deserves Credit for Handling of Kimmel Controversy | Opinion

Disney’s decision to reinstate Jimmy Kimmel, was not only Disney CEO Bob Iger’s plan all along—it is the correct move.

www.newsweek.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · 20d

In @fortune.com - Behind closed doors, our top CEOs say Trump is bad for business and it’s time to Make America into America Again - While many CEOs have been willing to support Pres. Trump out of patriotic duty, they are increasingly questioning who stands to benefit...

fortune.com/2025/09/21/b...

Behind closed doors, our top CEOs say Trump is bad for business and it's time to Make America into America Again | Fortune

At our Yale Chief Executive Leadership Institute forum, over 100 business leaders said what they really think. They're worried Trump is eroding America’s future.

fortune.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · 21d

In CHIEF EXECUTIVE - At CEO Forum In Washington, Little Support For Trump Economic Policies - As one CEO put it, privately: “I like some of what he’s done,” he said. “But I’m not crazy about a lot of it.”

chiefexecutive.net/at-ceo-forum...

At CEO Forum In Washington, Little Support For Trump Economic Policies

The annual Yale CEO Caucus drew many of the top names in American business—and little support for the president’s actions. At least in private.

chiefexecutive.net

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Reposted by Jeffrey Sonnenfeld

Carl Quintanilla @carlquintanilla.bsky.social · 23d

You’d think someone would say something.

@wsj.com @jeffsonnenfeld.bsky.social
www.wsj.com/business/ins...

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Sep 7

On @cnbc.com Power Lunch - Tesla’s proposed pay package is foolish and reckless but shareholders’ problem: Yale’s Sonnenfeld
www.cnbc.com/video/2025/0...

Tesla's proposed pay package is foolish and reckless but shareholder's problem: Yale's Sonnenfeld

Jeff Sonnenfeld, Yale School of Management senior associate dean, joins 'Power Lunch' to discuss Tesla's proposed pay package for Elon Musk, if any executive should receive that pay package level and ...

www.cnbc.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Sep 6

In @fortune.com - Musk holds hostage history’s biggest meme stock delusion - "The proposed scheme is ludicrous not only in terms of the highly aspirational 12 milestones that would unlock the benefits, but also in terms of good governance practice."

fortune.com/2025/09/06/e...

Musk holds hostage history's biggest meme stock delusion

Musk's magic wand is drained, and there's a fine line between visionary winners and delusional losers.

fortune.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Sep 5

In TIME magazine - Harvard Gets the Better Hand While Trump Fumbles His Cards - “In any negotiation you need to, in the words of Kenny Rogers, ‘know when to hold 'em; Know when to fold 'em.’ Harvard has the cards. The key question is: How will they play them?”

time.com/7314798/harv...

How Harvard Can Out-Negotiate Trump

A judge ruled that $2.2 billion in research funding halted by Trump must be reinstated. Now, Harvard has three options.

time.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Sep 2

In @fortune.com - Is Putin Playing Trump, or Is Trump Playing Us? - “It’s clear that despite President Donald Trump’s claims that he would be able to end the conflict quickly, we are still far away from an end to Vladimir Putin’s…”

fortune.com/2025/08/31/p...

Is Putin playing Trump or is Trump playing us?

Is Putin buying time to batter Ukraine? Or is Trump dangling vague assurances? It's all bark and no bite — all hat and no cattle.

fortune.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 29

In TIME magazine - Hold the Mao: Trump Seizing Private Enterprises for State-Driven Economy - President Trump’s blatant efforts to transform America’s long-heralded capitalist system into a state-controlled economy have business leaders alarmed...
time.com/7313446/trum...

The Danger of Trump Seizing Private Companies

The Trump Administration's stake in companies like Intel threatens America’s capitalist system.

time.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 28

On @msnbc.com's 11th Hour with Stephanie Ruhle - Jeffrey Sonnenfeld Pushes CEOs to Stand Up for American Values - He argues business leaders have become complicit through silence as they watch from the sidelines, while the Trump admin potentially distorts free markets.
app.box.com/s/0xzi0d2dy6...

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 26

In Fortune - Why every CEO and every American should be fed up with Trump’s Fed attack... Even if there is a strong case against Cook, then Trump’s clumsy interference could subvert his own Justice Department...
fortune.com/2025/08/26/t...

Why every CEO—and every American—should be fed up with Trump's Fed attack

CEOs must recognize that they can inadvertently become complicit in the erosion of core American values as they watch, worried from the sidelines.

fortune.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 25

Just out in @fortune.com - The emperor strikes back - but Trump's revenge and deflection aren't public protection

fortune.com/2025/08/25/t...

The emperor strikes back—but Trump's revenge and deflection aren’t public protection

Over 2,000 years ago, Roman emperors would arrange massive public salutes to themselves, surrounded by armed, uniformed soldiers and cheering crowds.

fortune.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 16

In TIME magazine - Trump’s Summit With Putin Need Not Be an Echo of Appeasement - Trump proved to be more cautious than many diplomats thought... What comes next matters far more... Trump needs to make the war more costly to Putin financially and militarily
time.com/7310116/trum...

Trump’s Summit With Putin Need Not Be an Echo of Appeasement

"After failing to secure a ceasefire, the time has come for Trump to impose the severe consequences against Putin he threatened."

time.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 15

On @cnbc.com - Jeffrey Sonnenfeld tells Frank Holland the Russian economy is struggling, tariffs could squeeze energy sales, and land swaps risk dangerous appeasement. President must remember that he holds the upper hand going into talks with Putin in Alaska.
www.cnbc.com/video/2025/0...

Sonnenfeld: Putin's economy is in real distress despite his propaganda

Jeffrey Sonnenfeld, Yale School of Management senior associate dean,told Worldwide Exchange Putin’s economy is struggling, tariffs could squeeze energy sales, and land swaps risk dangerous appeasement...

www.cnbc.com

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Reposted by Laura D’Andrea Tyson, Jeffrey Sonnenfeld

NellMinow @nellminow.bsky.social · Aug 13

"Trump has seized control of private enterprise’s strategic decision-making and investment policies.. so that he may dictate leadership staffing, punish corporate critics, and demand public compliance with his political agenda." @jeffsonnenfeld.bsky.social fortune.com/2025/08/12/m...

Is MAGA going Marxist and Maoist? Trump's assault on free-market capitalism

Many business leaders are horrified at the prospect of New York City turning socialist under Zohran Mamdani, but Trump's assaults on free-market capitalism make him look like John D. Rockefeller.

fortune.com

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Reposted by Laura D’Andrea Tyson, Jeffrey Sonnenfeld

Ian Bassin @ianbassin.bsky.social · Aug 13

And here's Yale School of Management's @jeffsonnenfeld.bsky.social‬ making a more extended point on this in @fortune.com fortune.com/2025/08/12/m...

Is MAGA going Marxist and Maoist? Trump's assault on free-market capitalism

Many business leaders are horrified at the prospect of New York City turning socialist under Zohran Mamdani, but Trump's assaults on free-market capitalism make him look like John D. Rockefeller.

fortune.com

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Reposted by Laura D’Andrea Tyson, Jeffrey Sonnenfeld

Carl Quintanilla @carlquintanilla.bsky.social · Aug 13

FORTUNE MAG: “.. Trump has seized control of private enterprise’s strategic decision-making and investment policies while invading corporate board rooms ..

“.. This is far more dangerous to capitalism than a city-run grocery store.”

@jeffsonnenfeld.bsky.social
fortune.com/2025/08/12/m...

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 9

In @TIME - Putin’s Economic House of Cards - Trump Must Not Forget He Has the Upper Hand Going into His Meeting with Putin

time.com/7308613/trum...

Trump Has the Upper Hand Going into His Meeting with Putin

"Ahead of their meeting on Aug. 15, Trump needs to remember that he holds all the cards—while Putin holds none."

time.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 4

Just out in @fortune.com - Trump's Queen of Hearts Moment with the BLS Echoes Putin's Purges and Orwell's Omens

fortune.com/2025/08/04/w...

Trump's 'Queen of Hearts' moment with the BLS echoes Putin's purges and Orwell's omens

The Queen of Hearts would say “off with their heads!” every time she was disappointed. Trump says data he doesn’t like is “faked.”

fortune.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 2

In TIME magazine - How Trump’s Decision to Fire BLS Commissioner Echoes Putin’s Strategies - Trump may or may not be friends with Putin, but he's clearly following the Russian President’s HR staffing guidelines, eliminating lieutenants who bring bad news.

time.com/7307097/trum...

Trump's Decision to Fire BLS Chief Echoes Putin's Strategies

"While Trump may or may not be friends with Putin, he is clearly following the Russian leader's HR staffing guidelines."

time.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Aug 1

In @salonnewsroom.bsky.social - Trump's trade tantrum leaves American economy needing more - "Certainty does not appear to be coming anytime soon...more businesses and consumers will start to realize how much better off they would be without the tariffs."
www.salon.com/2025/08/01/t...

Trump's trade tantrum leaves American economy needing more

Erratic financial markets, a slowdown in consumer spending, strained relations with allies. What's next?

www.salon.com

Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Jul 31

On @msnbc.com today - Sonnenfeld discusses New Republic article on "Shattering the Tiffany Network: Selling Paramount Out Cheap"

yale.box.com/s/owbxmneopa...

MSNBC - Yale's Sonnenfeld discusses how Shari Redstone degraded Paramount.mp4 | Powered by Box

yale.box.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Jul 28

Just out in The New Republic - The “Tiffany Network” Shatters as Paramount-CBS Sells Its Soul Cheap

newrepublic.com/article/1984...

The “Tiffany Network” Shatters as Paramount-CBS Sells Its Soul Cheap

The new, post-merger head of CBS donated to Biden—but apparently wants to make Bari Weiss a network star. How worried should we be?

newrepublic.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Jul 24

Just out in TIME - Ukrainian President Volodomyr Zelenskyy Must Stand Up To Corruption

time.com/7305230/zele...

Volodomyr Zelensky Must Stand Up to Corruption

Measures to strip Ukrainian's anti-corruption institutions of power were a mistake. Now, Zelensky must restore trust.

time.com

Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Jul 21

On @cnbc.com Worldwide Exchange with Frank Holland - Yale’s Leadership Expert Jeffrey Sonnenfeld Reveals New Studies on AI as Frequent Group Think Distortions
www.cnbc.com/video/2025/0...

Sonnenfeld: AI can’t always recognize basic facts and that should alarm us

Jeffrey Sonnenfeld, Yale School of Management senior associate dean, joins "Worldwide Exchange" to warn AI tools spread groupthink and misinformation, and CEOs fear overinvestment driven by hype.

www.cnbc.com

Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Jul 16

Just out in TIME with my friend Joanne Lipman - Grok and Groupthink: Why AI is Getting Less Reliance, Not More....Still Space for Human Intelligence

time.com/7302830/why-...

Why AI is Getting Less Reliable

Jeffrey Sonnenfeld and Joanne Lipman issue a warning about AI chatbots' vulnerability to manipulation and groupthink.

time.com

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Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Jul 15

Just out in @fortune.com - The attacks on Apple's Tim Cook are half-baked

fortune.com/2025/07/15/a...

The attacks on Tim Cook are half-baked—despite Apple stumbling over AI

Under Tim Cook's leadership, Apple’s market value has soared from $350 billion in 2011 to more than $3 trillion today.

fortune.com

Jeffrey Sonnenfeld @jeffsonnenfeld.bsky.social · Jul 11

On CNBC today - Tim Cook's leadership still vitally needed at Apple

www.cnbc.com/video/2025/0...

Yale's Jeffrey Sonnenfeld: Tim Cook's leadership still warranted at Apple

Jeffrey Sonnenfeld, Yale School of Management senior associate dean, joins CNBC's 'Squawk on the Street' to discuss whether Apple should consider replacing Apple CEO Tim Cook, Elon Musk's potential am...