Hudson Yards, the massive mixed-use development on Manhattan’s west side, has landed another office tenant.

Market Axess, an electronic trading platform for fixed-income securities and provider of market data and post-trade services for fixed-income markets, will relocate its headquarters to 55 Hudson Yards.

Market Axess will take 83,000 square feet over three floors for its 250 employees. Market Axess is the fourth commercial office tenant at 55 Hudson Yards, which is being developed by Related Cos., Mitsui Fudosan America and Oxford Properties Group, and the 15th tenant overall to move into Hudson Yards.

Along with the news on Market Axess, Hudson Yards provided an update on the development, indicating that it has 5.8 million square feet of office space under construction with 5.1 million square feet committed, leaving 15 percent of the commercial space still available.

Fifty-Five Hudson Yards, a 51-story, 1.3 million-square-foot (gross) building designed by architect A. Eugene Kohn of Kohn Pedersen Fox, is expected to open in 2018. Other tenants there will be Boies, Schiller & Flexner and Milbank, Tweed, Hadley & McCloy LLP and Point72. Officials said the building is defined by its indoor-outdoor spaces, early Modernism-inspired exterior design and efficient interior space planning. The building is located at the intersection of Hudson Yards, the High Line and Hudson Park & Boulevard. It opens onto a park and sits adjacent to the number 7 subway station.

Ten 10 Hudson Yards, occupied by Coach Inc., L’Oréal USA, The Boston Consulting Group, SAP, VaynerMedia, Intersection and Sidewalk Labs, opened in May.

Sales for the 285 residences at 15 Hudson Yards launch in September.

The 1 million-square-foot retail mall and 5-acre public plaza will open in the fall of 2018 with more than 100 shops and restaurants, including New York City’s first Neiman Marcus and signature restaurants by Chefs Thomas Keller, José Andrés and Costas Spiliadis.

In 2019, 30 Hudson Yards will open with KKR, Wells Fargo Securities, TimeWarner, HBO, CNN and Related.

Hudson Yards, with 17 million square feet of commercial and residential space, is considered the largest private real estate development in the nation.