Avg Price (Column)

The average price of the position currently held. For example, if a customer bought 1000 shares of INTC at 127 with a total price of $127,000 and 1000 shares of INTC at 128 with a total price of $128,000, the average price would be 127.50 ($255,000 divided by 2000).

  For futures, positions are not closed intraday (they are netted intraday) and, therefore, p/l is not realized intraday.  The average price (and unrealized p/l) represents accrued p/l from the overall net position, not just the most recently opened portion of the day's netted position.