AMMO, Inc. (RTRO: OTC Pink Current) | Symbol Change Mon, Feb 06, 2017 12:00 - AMMO, Inc. ( RTRO : OTC Pink Current) - Symbol Change - The symbol, RTRO, is no longer a valid symbol for AMMO, Inc.. As of Mon, Feb 06, 2017, the new trading symbol is RTROD. You may find a complete list of symbol changes at otcmarkets.com .
