Douglas Elliman Inc.
A luxury residential real estate brokerage focused on major U.S. markets, Douglas Elliman pairs roughly 5,800 agents across more than a hundred offices with title, escrow, mortgage, and new-development marketing services. It was founded in 1911 by Douglas L. Elliman, who famously started the firm in a basement store on Madison Avenue. The company later briefly operated as "Prudential Douglas Elliman" before reclaiming its founder's name in 2012.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.