How does the Amex official closing price (AOCP) compare to the Nasdaq official closing price (NOCP)?
The Amex specialists will determine the AOCP based upon market forces and supply and demand in the marketplace. To the extent that there is little or no imbalance, this determination will be derived, in part, from observing and interacting with trading activity in other market centers, including but not limited to SuperMontage. To the extent that there are sizable MOC imbalances, price impact can be expected. Given the clear limitations to the existing Nasdaq closing process, the Amex would not try to duplicate the NOCP, as we believe that this would merely perpetuate the utilization of a flawed closing price.
