Real Estate Ryan Serhant on NYC Mayor Mamdani’s property tax plan By Internationalfinancialnews.com - 11 March 2026 0 5 Copy URL ShareShare Article via FacebookShare Article via TwitterShare Article via LinkedInShare Article via Email CNBC’s Diana Olick joins ‘Squawk Box’ to discuss her conversation with Serhant founder and CEO Ryan Ryan Serhant on New York City Mayor Mamdani’s property tax plan. 01:47 Tue, Mar 10 20268:27 AM EDT