In the ultra-luxury market, a trend has emerged where wealthy individuals buy up adjacent properties to create private compounds. This practice, known as "landmaxxing," has been gaining traction this year. Some notable business leaders are driving this trend, including Citadel billionaire Ken Griffin.

Griffin has invested heavily in South Florida, spending over $450 million to assemble a 27-acre compound in Palm Beach. His total land holdings in the region, from Miami to Palm Beach, have cost more than $1 billion. Further details on this luxury real estate trend are available from The Real Deal, which originally reported on the story.