An influx of wealth is reshaping the real-estate market in South Florida. The average home price in Palm Beach hit $20 million, making it the country's most expensive market. Six South Florida homes seeking over $40 million offer perks from a rooftop pool to a tennis court. At the same time, the number of listings has fallen off in Palm Beach and Miami Beach, nudging along competition for what homes come to market. Take a look at six of the most expensive homes for sale in South Florida eyed by these monied movers, with prices topping $40 million.

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Persons: —, Larry Ellison's, Ken Griffin's, Jeff Bezos's, Ruthie Assouline, Douglas Elliman, there's, Corcoran Organizations: Palm, Service, Sunshine State, Oracle, Citadel, Miami, Wall, CNBC, Miami Beach Locations: South Florida, Palm Beach, Florida, Valley, New York City, Miami, Beach, Miami Beach, nudging