{"id":223025,"date":"2026-05-07T10:22:11","date_gmt":"2026-05-07T10:22:11","guid":{"rendered":"https:\/\/www.newsbeep.com\/us-ny\/223025\/"},"modified":"2026-05-07T10:22:11","modified_gmt":"2026-05-07T10:22:11","slug":"billionaire-bill-ackman-says-mamdani-shouldnt-drive-out-the-ken-griffins-of-the-world-if-he-wants-new-york-to-prosper","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us-ny\/223025\/","title":{"rendered":"Billionaire Bill Ackman says Mamdani shouldn&#8217;t \u2018drive out the Ken Griffins of the world&#8217; if he wants New York to prosper"},"content":{"rendered":"\n<p class=\"yf-1fy9kyt\">New York City&#8217;s future may hinge on a simple but uncomfortable question: Can it afford to lose its richest residents?<\/p>\n<p class=\"yf-1fy9kyt\">Billionaire investor Bill Ackman doesn&#8217;t think so. And he&#8217;s making that case amid a growing political chorus demanding new taxes on ultra-wealthy New Yorkers.<\/p>\n<p>      Must Read          <\/p>\n<p class=\"yf-1fy9kyt\">The debate has intensified around New York&#8217;s Mayor Zohran Mamdani, who is calling for higher taxes on billionaires to help fund childcare programs and close budget gaps.<\/p>\n<p class=\"yf-1fy9kyt\">Mamdani is proposing a &#8220;pied-\u00e0-terre&#8221; tax on high-value second homes, like hedge fund CEO Ken Griffin&#8217;s $238-million penthouse, which Mamdani points to in a viral &#8216;Tax the Rich&#8217; social video (1).<\/p>\n<p class=\"yf-1fy9kyt\">&#8220;This pied-\u00e0-terre tax is specifically designed for the richest of the rich, those who store their wealth in New York City real estate but who don&#8217;t actually live here,&#8221; he said in the video.<\/p>\n<p class=\"yf-1fy9kyt\">In an interview with Bloomberg News, Ackman said by alienating ultra-wealthy taxpayers like Ken Griffin, the city may lose more money than it gains<\/p>\n<p class=\"yf-1fy9kyt\">&#8220;If your goal is to make New York City kind of financially solvent, what you don&#8217;t want to do is drive out the Ken Griffins of the world,&#8221; he said.<\/p>\n<p>      Why billionaires matter more than you might think    <\/p>\n<p class=\"yf-1fy9kyt\">Mamdani has focused on Griffin, worth an estimated (2) $50.2 billion, as a symbol of wealth concentration.<\/p>\n<p class=\"yf-1fy9kyt\">The Citadel CEO is not happy about being targeted. He told CNBC (3) that by identifying his building, the mayor had put him in harm&#8217;s way. It is also affecting his business decisions, he warned.<\/p>\n<p class=\"yf-1fy9kyt\">Griffin told Fox (4) he was reconsidering construction of a new multibillion-dollar midtown Manhattan development project and considering a corporate move to Miami.<\/p>\n<p class=\"yf-1fy9kyt\">&#8220;We need to double down on our bet in Miami because we want to be in a state that embraces business, embraces education, embraces personal freedom and liberty,&#8221; he said.<\/p>\n<p class=\"yf-1fy9kyt\">Ackman sees the clash as a risky moment for New York City.<\/p>\n<p class=\"yf-1fy9kyt\">&#8220;[Griffin] is a major job creator of some of the highest-paid jobs in the city,&#8221; he said. &#8220;He spent a lot of money here. He&#8217;s given away a lot of money here \u2026 hospitals, museums, cultural institutions.&#8221;<\/p>\n<p>    Story Continues  <\/p>\n<p class=\"yf-1fy9kyt\">Read More: <a href=\"https:\/\/moneywise.com\/real-estate\/real-estate\/fundrise-private?throw=HALF_yahoo&amp;placement_syn=placement_2&amp;utm_source=syn_oath_mon&amp;utm_medium=BL&amp;utm_campaign=183952&amp;utm_content=syn_f5865544-f29f-410d-8704-e59949f1c3cb\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:This $1B private real estate fund is now accessible to non-millionaires. Start investing with just $10;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;This $1B private real estate fund is now accessible to non-millionaires. Start investing with just $10&quot;}\" class=\"link \">This $1B private real estate fund is now accessible to non-millionaires. Start investing with just $10<\/a><\/p>\n<p class=\"yf-1fy9kyt\">He adds that even a small exodus of high earners could create material budget pressure that can affect all New Yorkers when it comes to funding public services, infrastructure and social programs.<\/p>\n<p class=\"yf-1fy9kyt\">According to data from the Empire Center for Public Policy (5) and Tax Foundation (6), in 2022, the top 1% of New York&#8217;s taxpayers generated 40% of the city&#8217;s income tax revenue and 41% of the state&#8217;s income tax revenue.<\/p>\n<p class=\"yf-1fy9kyt\">Ackman says the top 1% are supporting as much as 40% of all tax revenue in New York City, including property taxes, and that the top 10% may account for about 75% of that revenue.<\/p>\n<p class=\"yf-1fy9kyt\">&#8220;You&#8217;re not going to make it more affordable by getting rid of the biggest drivers of tax revenues for the city,&#8221; Ackman said.<\/p>\n<p>     New York isn&#8217;t alone in facing this dilemma   <\/p>\n<p class=\"yf-1fy9kyt\">Cities and states across the country have experimented with higher taxes on wealthy residents (7).<\/p>\n<p class=\"yf-1fy9kyt\">Ackman pointed to California, where some high-net-worth individuals have relocated to lower-tax states like Texas and Florida.<\/p>\n<p class=\"yf-1fy9kyt\">Whether those moves are driven purely by taxes is debatable. But the possibility of relocation has become a central concern for policymakers trying to balance revenue needs with economic competitiveness.<\/p>\n<p class=\"yf-1fy9kyt\">&#8220;I&#8217;m more of the kind of guy to fight to make sure New York City is a great city than someone who&#8217;s going to leave,&#8221; Ackman said.<\/p>\n<p class=\"yf-1fy9kyt\">Still, his warning is clear: Policies that alienate top taxpayers could have unintended consequences.<\/p>\n<p class=\"yf-1fy9kyt\">What is unknown is what those consequences will be.<\/p>\n<p class=\"yf-1fy9kyt\">If high earners leave, the city could face budget shortfalls that lead to service cuts, higher taxes on remaining residents or both.<\/p>\n<p class=\"yf-1fy9kyt\">On the flip side, if policies successfully increase revenue without driving people away, they could fund programs aimed at affordability and quality of life.<\/p>\n<p class=\"yf-1fy9kyt\">In an interview with CNBC last fall, Ackman did acknowledge that Mamdani was right about affordability issues in the city (8). They just disagree on how to solve the problems.<\/p>\n<p>     You May Also Like       <\/p>\n<p class=\"yf-1fy9kyt\">Join 250,000+ readers and get Moneywise\u2019s best stories and exclusive interviews first \u2014 clear insights curated and delivered weekly. <a href=\"https:\/\/moneywise.com\/subscription?throw=WTRN5_yahoo&amp;placement_syn=placement_3&amp;utm_source=syn_oath_mon&amp;utm_medium=BL&amp;utm_campaign=183952&amp;utm_content=syn_6b233880-f1d6-40a3-ab9b-e335143cecde\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:Subscribe now.;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;Subscribe now.&quot;}\" class=\"link \">Subscribe now.<\/a><\/p>\n<p>     Article Sources   <\/p>\n<p class=\"yf-1fy9kyt\">We rely only on vetted sources and credible third-party reporting. For details, see our <a href=\"https:\/\/moneywise.com\/editorial-ethics-and-guidelines?utm_source=syn_oath_mon&amp;utm_medium=WL&amp;utm_campaign=183952&amp;utm_content=syn_62f3beae-6301-4d89-aef8-a168d7d018b9\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:ethics and guidelines;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;ethics and guidelines&quot;}\" class=\"link \">ethics and guidelines<\/a>.<\/p>\n<p class=\"yf-1fy9kyt\">Instagram <a href=\"https:\/\/www.instagram.com\/reels\/DXKlAiMkeAr\/\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:(1);elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;(1)&quot;}\" class=\"link \">(1)<\/a>; Forbes <a href=\"https:\/\/www.forbes.com\/profile\/ken-griffin\/\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:(2);elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;(2)&quot;}\" class=\"link \">(2)<\/a>; CNBC <a href=\"https:\/\/www.cnbc.com\/2026\/05\/06\/mamdani-ken-griffin-nyc-miami-tax.html\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:(3;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;(3&quot;}\" class=\"link \">(3<\/a>, <a href=\"https:\/\/www.cnbc.com\/2026\/04\/23\/wealth-tax-millionaire-tax.html\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:7,;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;7,&quot;}\" class=\"link \">7,<\/a> <a href=\"https:\/\/www.youtube.com\/watch?v=n4heAzg7MJw\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:8;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;8&quot;}\" class=\"link \">8<\/a>) Fox Business <a href=\"https:\/\/www.foxbusiness.com\/media\/ken-griffin-vows-double-down-miami-move-says-nyc-doesnt-welcome-success\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:(4);elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;(4)&quot;}\" class=\"link \">(4)<\/a>; Empire Center for Public Policy <a href=\"https:\/\/www.empirecenter.org\/publications\/parsing-the-impact-of-mamdanis-tax-hike-plans\/\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:(5);elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;(5)&quot;}\" class=\"link \">(5)<\/a>; Tax Foundation <a href=\"https:\/\/taxfoundation.org\/data\/all\/federal\/latest-federal-income-tax-data-2025\/\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:(6);elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;(6)&quot;}\" class=\"link \">(6)<\/a><\/p>\n<p class=\"yf-1fy9kyt\">This article originally appeared on <a href=\"https:\/\/moneywise.com?placement_syn=original_1&amp;utm_source=syn_oath_mon&amp;utm_medium=WL&amp;utm_campaign=183952&amp;utm_content=syn_41baca6e-d31a-41d5-887a-43e684c6b5a4\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:Moneywise.com;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;Moneywise.com&quot;}\" class=\"link \">Moneywise.com<\/a> under the title: <a href=\"https:\/\/moneywise.com\/news\/top-stories\/bill-ackman-new-york-city-taxes-billionaires-ken-griffin?placement_syn=original_2&amp;utm_source=syn_oath_mon&amp;utm_medium=WL&amp;utm_campaign=183952&amp;utm_content=syn_860198d1-fecb-418a-9eaf-255a36e8ba89\" rel=\"nofollow noopener\" target=\"_blank\" data-ylk=\"slk:Billionaire Bill Ackman says Mamdani shouldn&#039;t \u2018drive out the Ken Griffins of the world&#039; if he wants New York to prosper;elm:context_link;itc:0;sec:content-canvas\" data-yga=\"{&quot;yLinkElement&quot;:&quot;context_link&quot;,&quot;yModuleName&quot;:&quot;content-canvas&quot;,&quot;yLinkText&quot;:&quot;Billionaire Bill Ackman says Mamdani shouldn&#039;&quot;}\" class=\"link \">Billionaire Bill Ackman says Mamdani shouldn&#8217;t \u2018drive out the Ken Griffins of the world&#8217; if he wants New York to prosper<\/a><\/p>\n<p class=\"yf-1fy9kyt\">This article provides information only and should not be construed as advice. It is provided without warranty of any kind.<\/p>\n<p>     <script async src=\"\/\/www.instagram.com\/embed.js\"><\/script><\/p>\n","protected":false},"excerpt":{"rendered":"New York City&#8217;s future may hinge on a simple but uncomfortable question: Can it afford to lose its&hellip;\n","protected":false},"author":2,"featured_media":223026,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[6718,18649,87698,9,11,10,7754,4334,82],"class_list":["post-223025","post","type-post","status-publish","format-standard","has-post-thumbnail","category-new-york","tag-bill-ackman","tag-ken-griffin","tag-ken-griffins","tag-new-york","tag-new-york-headlines","tag-new-york-news","tag-property-taxes","tag-robert-kiyosaki","tag-zohran-mamdani"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/posts\/223025","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/comments?post=223025"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/posts\/223025\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/media\/223026"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/media?parent=223025"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/categories?post=223025"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ny\/wp-json\/wp\/v2\/tags?post=223025"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}