{"id":401108639,"url":"https://lda.senate.gov/api/v1/registrants/401108639/?format=json","house_registrant_id":56558,"name":"OPTIVER SERVICES US LLC","description":null,"address_1":"130 E. Randolph St.","address_2":"Suite 800","address_3":null,"address_4":null,"city":"Chicago","state":"IL","state_display":"Illinois","zip":"60601","country":"US","country_display":"United States of America","ppb_country":"US","ppb_country_display":"United States of America","contact_name":"MATT MACKENZIE","contact_telephone":"+1 312-821-9500","dt_updated":"2026-04-01T12:14:47.575264-04:00"}