ARLINGTON, Va.--(BUSINESS WIRE)--Graham Holdings Company (NYSE: GHC) announced today that it will hold a virtual Investor Day on Tuesday, December 9, 2025. The live webcast will be held from 1:00 p.m. to 2:30 p.m. Eastern Time (ET) and will include audio and presentation slides. There will be a discussion of the Company's operations and financials, as well as a presentation from the Graham Holdings management team. Registration is required. Please visit the Company's website at www.ghco.com to. ...