Positron Corp. (POSC: OTC Pink Current) | Splits Wed, Apr 08, 2015 12:00 - Positron Corp. ( POSC : OTC Pink Current) - Splits - Effective Wed, Apr 08, 2015, POSC: OTC Pink Current engaged in a rev split. As a result of the split, shs decreased by 1 for 400 split. Due to the split, POSC is no longer valid. The new trading symbol is POSCD. You may find a complete list of splits at otcmarkets.com .