NMS = NasdaqGS; ASE = AMEX; NYQ = NYSE; NGM = NasdagGM
Last Trade: The time and price of the last trade made for the stock. The date is reported in place of the time if the stock hasn't traded today.
Change: The change in price for the day. This is the difference between the last trade and the previous day's closing price (Prev Close). The change is reported as "0" if the stock hasn't traded today.