How does the Amex deal with trading halts?
Regulatory and non-regulatory halts are treated differently. If the listing market calls a regulatory halt, the Amex will halt trading in that stock, and, if the halt persists until the end of the trading day, the Amex will cancel all MOC/ LOC orders in the stock and will not disseminate an AOCP for that stock on that day. If the listing market declares a halt is due to Extraordinary Market Activity, the Amex will treat the halt as it would a regulatory halt for the purposes of the close. If a non-regulatory halt is called by another market, the Amex will continue to trade the stock and will issue an AOCP for the stock for that day. If a non-regulatory halt is called by the Amex and that halt continues through the end of the day, then other markets will continue to trade the stock, but the Amex will cancel all MOC/ LOC orders in the stock and will not disseminate an AOCP for that stock on that day.
