BXP has pushed 360 Park Avenue South past 90% leased on the back of more than 230,000 square feet of long-term deals from tenants that are still in expansion mode, offering investors another data point that flight-to-quality in Midtown South has room to run. The new and expansion leases carry a weighted average term of 11.4 years at the 450,000-square-foot tower, effectively locking in a rent roll that spans financial services, AI and technology, hospitality and media.
The largest move came from Optiver, which added 92,000 square feet across floors two through five, bringing its total footprint in the building to about 115,000 square feet. For a global market maker already in place, the incremental space reads as a clear commitment to the asset and the location rather than a short-term swing on a bargain sublease.
New-to-building tenants skew toward growth and capital-backed users. Hunter Point Capital leased roughly 46,000 square feet across the entire 15th and 16th floors, while Trexquant took about 23,000 square feet on the 10th floor to launch its New York office. Both are emblematic of capital markets and quantitative strategies that still see value in Midtown South for recruiting and collaboration.
The roster also underlines the pull of Madison Square Park for brand-conscious occupiers beyond finance. Betches Media is relocating its headquarters into approximately 23,000 square feet on the sixth floor as it marks its 15th anniversary, aligning its physical footprint with its scaled digital presence.
On the technology side, Vercel has leased roughly 23,000 square feet on the ninth floor, following its $300 million Series F round in 2025 that valued the company at $9.3 billion. The agentic infrastructure platform is positioning the space as a hub for AI-focused developers and engineers, an example of how funded tech is still underwriting long-term office commitments when the product fits the workforce it wants to attract.
Marriott International rounds out the slate with approximately 23,000 square feet on the 14th floor to house New York-based corporate staff tied to its Luxury Group, global brand PR and Riott Haus Creative, its in-house agency.
Hilary Spann, BXP's executive vice president for the New York region, framed the leasing as confirmation that tenants will still pay for and commit to "best-in-class space in the right locations." In Midtown South, demand continues to center on strong design, flexible amenities, and immediate access to transit and neighborhood energy, she said, adding that 360 Park "delivers on those fundamentals."
The building sits at Park Avenue South and 26th Street, one block from Madison Square Park and roughly equidistant to Grand Central and Penn Station, and it has been repositioned with modernized systems, renovated lobbies, full-floor prebuilts and a hospitality-style amenity package that includes lounges, coworking, a conference center, rooftop terrace and ground-floor dining and bike valet.
BXP acquired 360 Park Avenue South in 2021 and has worked with a CBRE team led by Peter Turchin and colleagues on the lease-up. With the building now largely spoken for, the tenant mix and lease duration show that institutional capital and venture-backed users will still sign 10-plus-year leases when they get full floors, design-forward space and access to Madison Square Park's labor pool.
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