Petro Rio S.A. (HRTPF: Grey Market) | Deleted Symbol Tue, Aug 08, 2017 12:00 - Petro Rio S.A. (HRTPF: Grey Market) - Deleted Symbol - As of Tue, Aug 08, 2017, HRTPF is no longer a valid symbol. You may find a complete list of deleted symbols at
otcmarkets.com .