Citadel.

Chicago has been a big centre for developers for finance companies for a long time. Hedge Funds, Market Makers, Asset Managers etc.

Citadel is moving to Miami because Chicago government sucks - the move was due to "riots, an employee stabbed, and the attempted hijacking of his Ken Griffin's car"

https://www.businessinsider.com/ken-griffin-citadel-moving-h...

Yeah, Miami is going to be way better for crime...