American Bio Medica Corp. (ABMC: Pink Limited) | Tier Change Sat, Jun 27, 2020 12:00 - American Bio Medica Corp. ( ABMC : Pink Limited) - Tier Change - The symbol, ABMC, no longer is classified as Pink No Information. As of Sat, Jun 27, 2020, ABMC resides in the Pink Limited tier. You may find a complete list of tier changes at otcmarkets.com .