Ken Griffin's $238 million New York City penthouse isn't the only pied-à-terre he owns. See what else is in his portfolio.

Tech Insider : Business
Ken Griffin speaks at The Cambridge Union.
Citadel CEO Ken Griffin has a real estate portfolio totaling over $1 billion.

Nordin Catic/Getty Images for The Cambridge Union

Jeff Bezos backs Mamdani's tax on luxury second homes, but says Ken Griffin isn't the villain

Tech Insider : Business
Jeff Bezos poses for photos at the 2026 Vanity Fair Oscar Party.
Amazon founder Jeff Bezos at the 2026 Vanity Fair Oscar Party.

Lionel Hahn/Getty Images

'NYC is cooked': Business leaders and Wall Streeters erupt over proposed luxury second-home tax

Tech Insider : Economy, Politics, Business
Zohran Mamdani grins toward the camera, flanked by photographers.
Mayor Zohran Mamdani has backed a proposal by Gov. Kathy Hochul to tax second homes in New York City valued at over $5 million.

Caean Couto/Getty Images

Silicon Valley investor Ron Conway says California's proposed wealth tax 'could' pass if it's up to voters

Tech Insider : Politics, Business
Ron Conway speaks at an event in 2013
Tech investor Ron Conway, seen here in 2013, is hoping that California Gov. Gavin Newsom helps kill a proposed wealth tax before it reaches voters.

Jeff Chiu/AP

Palantir's Alex Karp has ties to a $46 million Miami mansion that was bought before his company's HQ move

Tech Insider : Business, Technology
alex karp
Alex Karp, the CEO of Palantir, is tied to a $46 million Miami home purchase.

Michael M. Santiago/Getty Images

Howard Schultz is the latest billionaire to ditch the West Coast for Miami

Tech Insider : Business
howard schultz
Howard Schultz, the former Starbucks CEO, is leaving Seattle for Miami.

Anna Moneymaker/Getty Images

I'm a millionaire living in Washington. I'm happy to pay more in taxes — it helps everybody.

Tech Insider : Business
A photo of a woman smiling.
Washington proposed a tax on millionaires, and millionaire Victoria Hattersley supports it.

Courtesy of Victoria Hattersley.

Sergey Brin has ties to a $51 million mansion that just sold in Miami

Tech Insider : Business, Technology
sergey brin
A $51 million property in Miami has sold to an entity with ties to Google cofounder Sergey Brin.

Lionel Hahn/Getty Images

Bernie Sanders is proposing a 5% billionaire wealth tax that would fund $3,000 checks for many Americans

Tech Insider : Politics, Business
Sen. Bernie Sanders and Rep. Ro Khanna
Sen. Bernie Sanders and Rep. Ro Khanna unveiled the wealth tax proposal on Monday.

Benjamin Fanjoy/Getty Images

California's billionaires are moving to Miami. We mapped out where they are buying.

Tech Insider : Economy, Business, Style
aerial of biscayne bay
Real estate on Indian Creek and Allison Island — both in the Biscayne Bay — has reached new highs as California billionaires flock to Miami.

Jeffrey Greenberg/Universal Images Group via Getty Images

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