Diversified Gas & Oil PLC (DGAOF: OTCQX International) | Symbol Change Fri, Aug 07, 2020 12:00 - Diversified Gas & Oil PLC ( DGAOF : OTCQX International) - Symbol Change - The symbol, DGAOF, is no longer a valid symbol for Diversified Gas & Oil PLC. As of Fri, Aug 07, 2020, the new trading symbol is DGOCF. You may find a complete list of symbol changes at otcmarkets.com .