After purchasing the roughly 5,000-square-foot apartment for $9.4 million, a tech investor renovated and furnished the unit.

The penthouse property is located inside the Summit Club, a tony community that has long been a haven for the rich and famous.

High-rise condo sales in Las Vegas, led by strength at the Waldorf Astoria, set a record during the first quarter in the average sales price and price per square foot. Research firm Applied Analysis ...