How Onni, TPG JVs gutting of The Bell Chicago Office Tower is now luring tenants back to the West Loop

2/17/2026

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Chicago Business Journal

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• Subcategory: Office: CBD

• Tag: Business: Insights | JV-Partnership | Lease | Renovation | Strategy

• Additional Filters-Subcategory: Office: Highrise

• Company: Onni Group, TPG Angelo Gordon

Highlights
Vancouver-based Onni Group's $130 million renovation of The Bell reached 88% occupancy.
Northwestern Mutual relocated from One North Wacker to The Bell last month.
Chicago office buildings invest in amenity centers to attract tenants amid high vacancy.