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Low-profile hedge fund smashes New York rent records with $30m office

Reported by Afr
Oct 4, 2026· 2 min read
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Key Takeaways
  • • Castle Hook Partners signed a lease for the top two floors of 625 Madison Avenue in midtown Manhattan, setting a New York office rent record at $21.2 million ($30.5 million AUD) annually.
  • • The hedge fund will pay between $350–$400 per square foot yearly for approximately 53,000 square feet (5,000 square metres) of penthouse space.
  • • The lease is with Related Companies, the real estate developer and owner of 625 Madison Avenue, with occupancy scheduled for the second half of 2029.
  • • Castle Hook is described as a low-profile hedge fund, and the deal underscores continued demand from alternative asset managers for premium office space in Manhattan despite broader commercial real estate pressures.
Summary
Castle Hook Partners has secured a landmark commercial real estate lease in New York City, agreeing to rent the penthouse comprising the top two floors of 625 Madison Avenue in midtown Manhattan. The transaction establishes a new record for office rent in New York at $21.2 million annually, or $30.5 million in Australian dollars. The lease encompasses approximately 53,000 square feet of space, with the hedge fund committing to annual per-square-foot rent ranging from $350 to $400—a premium rate reflective of the building's prestige and Manhattan's most sought-after office locations.

Related Companies, the developer and property owner, negotiated the deal with Castle Hook for occupancy beginning in the second half of 2029. The lease signals sustained appetite from hedge funds and alternative investment managers for flagship office space in Manhattan's premier commercial districts, even as broader commercial real estate market dynamics continue to evolve. The transaction demonstrates that top-tier alternative asset managers remain willing to commit to significant capital expenditures for prime real estate in New York's financial hub, positioning themselves in iconic buildings alongside established institutional financial players.

The 625 Madison Avenue location has long been a coveted address in Manhattan's office market, and this lease reinforces its status as a destination for marquee tenants in the hedge fund and financial services sectors.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Afr Low-profile hedge fund smashes New York rent records with $30m office