QuantumSphere, Inc. (QSIM: Grey Market) | Venue Change Thu, Jul 25, 2019 12:00 - QuantumSphere, Inc. ( QSIM : Grey Market) - Venue Change - The symbol, QSIM, no longer trades on OTC Link. As of Thu, Jul 25, 2019, QSIM trades on Grey Market. You may find a complete list of venue changes at otcmarkets.com .
