Gilson Finkelsztain, chief executive officer of B3 SA-Brasil Bolsa Balcao, speaks during an interview at the exchanges office in Sao Paulo, Brazil, on Tuesday Jan. 8, 2019.

Gilson Finkelsztain, chief executive officer of B3 SA-Brasil Bolsa Balcao, speaks during an interview at the exchanges office in Sao Paulo, Brazil, on Tuesday Jan. 8, 2019.