Marc Holliday

Where to begin? 

Since 2004, Marc Holliday has been the chief executive of the largest office owner in the nation’s premier office market, New York City (and has been its chairman since 2019). 

SL Green’s portfolio includes gleamingly recent sites such as the 1.75 million-square-foot — fully occupied — One Vanderbilt and the 1.4 million-square-foot One Madison Avenue, which as of January was 72 percent leased following its reopening and a major repositioning a few months prior. That portfolio also includes dozens of older buildings, most in Midtown Manhattan.

Those buildings led the way for what turned out to be a blockbuster year for SL Green: more than 3.6 million square feet leased, which the company — whose origins stretch to the 1980s, and which went public in 1997 — described as its third-highest annual sum ever. SL Green’s occupancy stood at 92.5 percent at the start of 2025, a streak Holliday anticipates maintaining. 

“We expect to finish this year in excess of 93 percent,” he said in early April. He compared his firm’s enviable performance with the roughly 18 percent availability in Manhattan overall. 

Outside of leasing, SL Green launched a residential conversion of 750 Third Avenue, and the company announced a Paris location of its Summit observatory — similar to the multilevel one it opened in 2021 atop One Vanderbilt. In July, SL Green said the 10 units in its Armani-branded condo at 760 Madison had sold out. And, in November, the company announced it sold an 11 percent stake in One Vanderbilt to Mori Building Company that valued the tower at $4.7 billion. 

A month later and on the financing side, Canadian pension fund Caisse de Dépôt et Placement du Québec committed $250 million to SL Green’s opportunistic debt fund (read: a fund invested in distressed assets and other likely wins). The company said that sets up the fund to reach more than $1 billion raised this year. SL Green also reduced its own outstanding debt by $1.5 billion in 2024.

As for 2025, Holliday’s firm in the first quarter closed on a $14.9 million deal for a 49.9 percent interest in the office building at 100 Park Avenue. It also closed on the $130 million acquisition for 500 Park Avenue, an office and condo building that the company says it brought to 100 percent occupancy. 

OK, we’ll end here because we’re running out of room.