Legacy Investing Converted Chicago Exchange Into Data Center
The former trading complex at 400 S. LaSalle St. has been retrofitted to support 33 megawatts of critical infrastructure.
Updated on Oct. 10, 2026 in Data Centers
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Legacy Investing and GI Partners have completed the conversion of the former Chicago options exchange into a modern data center. The facility at 400 S. LaSalle St. now supports 33 megawatts of power capacity.
Why it matters
This conversion repurposes a significant piece of Chicago trading infrastructure to meet the rising demand for power-intensive computational resources in a dense urban core.
The retrofitted site provides 33 megawatts of power capacity. This total capacity represents the conversion of the former trading floor space into high-density server environments.
The players
Legacy Investing
A real estate investment firm specializing in the acquisition and redevelopment of mission-critical infrastructure properties.
GI Partners
An investment firm that manages private equity and real estate portfolios with a focus on data center infrastructure and technology assets.
The details
Legacy Investing and GI Partners redeveloped the trading complex by gutting the interior architecture to install the power and cooling distribution systems required for high-density computing. The process involved upgrading the site’s electrical infrastructure to support the 33-megawatt load necessary for modern data center operations.
Timeline
October 9, 2026: The facility conversion was finalized.
The Tech Race
This project follows the industry trend of retrofitting dense, urban commercial space into data centers to overcome local power and real estate constraints. Developers increasingly target central business districts to bypass the development delays associated with greenfield sites.
The new facility provides additional compute capacity for Chicago-based firms, though specific tenant availability remains unannounced. The conversion demonstrates how urban commercial workflows are evolving to prioritize local digital infrastructure support.
The takeaway
The transformation of 400 S. LaSalle St. signals a shift toward high-intensity data infrastructure in previously traditional financial hubs. Observers should track if similar trading venues in major cities undergo identical redevelopments in the coming quarters.
Further reading
For more on the infrastructure shifts occurring in the region, see Data Centers.
Source note: This article includes information reported by Bloomberg Business.
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