Ken Griffin, Vornado and Rudin Bet $6B on 1.9M SF Trophy Tower at 350 Park Avenue

Key Points

• Ken Griffin’s Citadel anchoring a 1.9M SF, 62-story supertall at 350 Park Avenue
• Estimated $6B development cost via JV with Vornado Realty Trust and Rudin
• Midtown East trophy vacancy below 10 percent as Class A demand tightens

The Project

A joint venture between Ken Griffin, Vornado Realty Trust, and Rudin is moving ahead with plans for a 1.9 million square foot supertall office tower at 350 Park Avenue in Midtown East. Designed by Foster + Partners, the 62-story tower will replace the existing building and span a full block frontage along Park Avenue between East 51st and East 52nd streets. Citadel and Citadel Securities are expected to anchor the project, initially taking about 850,000 square feet, with appetite reportedly growing.

Trophy Office in a Bifurcated Market

The tower will join other elite Midtown East properties such as 270 Park Avenue and One Vanderbilt, reinforcing the corridor’s dominance in the trophy segment. Manhattan’s trophy office inventory totals roughly 82 million square feet across about 60 buildings. Vacancy in this tier sits below the 10 percent equilibrium threshold, with Park Avenue availability recently reported around 8.9 percent. Meanwhile, roughly 67 million square feet of office space across the broader city remains vacant, largely concentrated in older commodity buildings. The result is a clear K-shaped recovery. Top-tier assets are holding rents while lower-tier buildings face pricing pressure or conversion.

Capital Stack and Risk

Rather than fully acquiring the development site for $1.4 billion, Griffin formed a joint venture structure with Vornado and Rudin. Vornado will hold between 20 and 36 percent equity and contribute both land and several hundred million dollars in cash. The project will move closer to debt financing after demolition is complete. Vornado plans to capitalize on Citadel’s master lease to stabilize the asset during construction. Despite strong leasing in Midtown East, Wall Street remains cautious on office REITs. Vornado’s stock has fallen sharply from pre-pandemic highs, reflecting broader skepticism around office fundamentals and capital costs.

Why It Matters

The 350 Park project is a direct rebuttal to pandemic-era doom loop narratives around the New York office. Large corporate users are consolidating into premium, amenitized buildings to attract and retain talent. Sublease inventory in Manhattan has fallen nearly 40 percent year over year, with Midtown sublet availability at its tightest levels since 2019. For landlords, the message is clear. Capital and tenants are concentrating at the very top of the market. Average product faces structural headwinds, while best-in-class buildings in prime locations are capturing outsized demand.

Investor Takeaway

At an estimated $6 billion price tag, 350 Park Avenue represents one of the most ambitious office bets in the country. Griffin’s commitment alongside Vornado and Rudin underscores confidence in Midtown East’s long-term trophy positioning. In today’s office cycle, the risk is not building too big. It is building anything less than best in class.