Inside Ken Griffin’s $1.5 Billion Property Portfolio

After more than three decades in Chicago, Griffin is close to cutting ties with the city that helped launch his fortune. His last remaining Windy City property—a penthouse perched on the 67th floor of Park Tower on North Michigan Avenue—has been quietly on the market since 2022, asking $15.75 million. Griffin originally bought the residence in 2000 for $6.9 million, then expanded it in 2012 by snapping up a 7,900-square-foot unit directly below for $15 million. Griffin’s move to Miami in 2022 marked a decisive break, citing frustrations with Chicago’s governance, rising crime, and cultural shifts.

Griffin recently deepened his investment in Hawaii’s exclusive Four Seasons Resort Hualalai, where he’s now spent roughly $28 million for two oceanfront properties. The Citadel CEO first bought four acres within the private Kona Coast enclave for $11.38 million back in 2009, and more recently he picked up a second property—a 0.6-acre parcel fronting the Pacific—for just under $17 million, after it was originally listed for $20.5 million.

The 5,600-square-foot Balinese-style home features four bedrooms with retractable walls that open to the outdoors, plus a lanai, a gazebo, and a sleek infinity pool—all designed to enhance the laid-back island lifestyle. Hualalai counts billionaire investors like Oaktree Capital’s Howard Marks among its homeowners, making it an ideal tropical retreat for high-powered financiers.

Nearly two decades ago, in 2009, Griffin acquired a full-floor apartment at the prestigious cooperative apartment house at 820 Fifth Avenue for $40 million but the undisputed centerpiece of Griffin’s portfolio is his record-breaking $238 million penthouse, which spans floors 50 to 53 of the Robert A.M. Stern-designed 220 Central Park South along Midtown’s “Billionaires Row.” The sprawling 24,000-square-foot residence not only secured his place among Manhattan’s real estate elite but also made him neighbors with celebrities like Sting and Trudie Styler. But that’s not all, folks; he also scooped up two adjacent units on the 20th floor that bring his total holdings in the building to around $244 million. 

In February 2025, Griffin expanded his Manhattan footprint, purchasing a historic duplex at the illustrious 740 Park Avenue for $45 million from Julia Koch, the widow of billionaire industrialist David Koch. 

Beyond his coastal estates and high-rise residences, Griffin also maintains a Rocky Mountain bolt hole … a couple of them, actually. The billionaire hedge funder reportedly owns two homes near Aspen’s Tiehack area, purchased in 2013 and 2015 for $10 million and $12.8 million, respectively. In 2024, he reportedly doubled down on the exclusive enclave, acquiring two adjacent properties nearby for a combined $66 million, and that same year, he sold another Tiehack residence he’d owned since 2009.

Griffin has spent more than a decade assembling one of the most valuable private real estate holdings in Palm Beach—and now he’s building what could be the most expensive home in the world.

The Citadel founder began his South Florida buying spree in 2012, quietly snapping up a series of oceanfront properties along Blossom Way for a reported $129.6 million. In 2019, a company linked to Griffin broke local records with the $104.99 million purchase of a 4.5-acre estate that once belonged to Broadway producer Terry Allen Kramer. Over time, the hedge fund billionaire expanded his footprint to span roughly 25 contiguous acres of prime land stretching from the Atlantic Ocean to the Intracoastal Waterway.

Now, he’s putting it all to use. According to The New York Post, Griffin is developing a sprawling estate on South Ocean Boulevard in an area known as Billionaires Row. The in-progress mega mansion will occupy about 8 of the 25 acres and reportedly cost between $150 million and $400 million to build. If realized as planned, the 50,000-square-foot home—complete with ocean and lake views, lush gardens, a massive pool, and spa—could be valued at $1 billion upon completion.

So the story goes, the gargantuan residence will initially house the financier’s mother, but sources say he intends for the estate to eventually serve as his retirement home.

In 2019, Griffin set his sights across the pond and snapped up 3 Carlton Gardens, a Grade II*-listed Georgian mansion overlooking Buckingham Palace, for roughly £95 million (about $122 million). At the time, it was the priciest U.K. home sale since 2011. Designed by the English neoclassical architect John Nash, the property features private gardens, a pool, and staff quarters.

Before Griffin’s purchase, the estate was owned by luxury property developer Mike Spink, who acquired it in 2012 for £65.5 million. Interestingly, the home previously served an intelligence function for MI6; it was used for interviewing prospective recruits. A spokesperson for Griffin described the mansion as “a historic property with a spectacular location, extraordinary elegance, and stunning gardens,” calling it “a truly unique opportunity to own a home in London,” The Guardian reported.

In March 2020, just as the COVID-19 pandemic began reshaping luxury real estate markets, Griffin quietly plunked down $84.4 million for Calvin Klein’s custom-built oceanfront estate in Southampton. Located on the ultra-exclusive Meadow Lane—often dubbed “Billionaires Row at the Beach”—the roughly seven-acre property sits along one of the most coveted stretches of the East End.

Originally built in the 1920s for horticulturist Henry Francis du Pont, the home was constructed using salvaged 18th-century architectural elements brought from Maryland. Over the decades, it passed through the hands of Warhol muse “Baby” Jane Holzer and coal magnate John Samuels III before being radically transformed in the 1980s by Barry Trupin into a sprawling, turreted mansion known as “Dragon’s Head.”

The chateau-style expansion ignited fierce zoning battles, not to mention a reputation for wild parties. Klein bought the property in 2003—right around the time Trupin went to prison for evading taxes—for $28.9 million. Eventually, after a lengthy design and approval process, the fashion designer demolished the extravagant residence in 2009. In its place, he built a minimalist, modernist compound comprising three interconnected volumes—a main residence, guest wing, and studio—spanning 13,000 square feet, all designed with the signature restraint and elegance for which Klein is known.

When Griffin announced in 2022 that he was relocating Citadel’s headquarters from Chicago to Miami, it wasn’t just a corporate decision—it was the opening move in a sweeping South Florida real estate strategy. The centerpiece of that vision is already rising downtown: a 54-story glass tower that will house Citadel’s new offices, along with two high-end restaurants and a rooftop hotel. But Griffin’s ambitions in Miami go well beyond commercial development.

That same year, he quietly purchased the waterfront estate of philanthropist Adrienne Arsht for $106.9 million—a record-breaking deal that marked the most expensive residential sale in Miami-Dade County history at the time. The nearly four-acre Coconut Grove estate spans 400 feet of Biscayne Bay frontage and includes two separate mansions: Indian Spring, a grand 1990s-era residence designed for entertaining, and Villa Serena, a 1913 Mediterranean Revival built by William Jennings Bryan and now listed on the National Register of Historic Places. With 25,000 square feet of combined living space, the compound now serves as a South Florida base for Griffin.

Meanwhile, Griffin has also been quietly assembling land on Miami’s exclusive Star Island. Since 2023, he’s spent approximately $169 million on seven contiguous parcels—roughly 6.5 acres total—on the celebrity-favored enclave. The combined value of his Coconut Grove and Star Island purchases tops $275 million and signals a long-term commitment to the region.

In June 2024, Griffin finalized the off-market purchase of Domaine de la Capilla, a storied waterfront estate on Tahiti Beach in Saint-Tropez. Tucked within one of the French Riviera’s most exclusive enclaves, the roughly two-acre compound was reportedly acquired for more than $90 million.

The property was once owned by famed photographer and socialite Gunter Sachs—best known for his jet-set lifestyle and high-profile marriage to Brigitte Bardot in the 1960s. Following Sachs’s death in 2011, the estate passed to his sons, Rolf and Christian Gunnar Sachs, who handled the sale.

Though few images of the residence have been made public, the property reportedly includes at least four structures, including a primary residence with arched doorways, a stately fireplace, and views that stretch from a large swimming pool out to the sparkling Mediterranean. An alfresco dining area shaded by mature trees rounds out the idyllic setting, which once served as a playground for Europe’s glitterati.