public long GrossSize { get; internal set; }

Public Property GrossSize As Long

public:
property long long GrossSize {
	long long get ();
	void set (long long value);
}

This value is the total number of shares or contracts bought (for a long position), or shorted (for a short position). It may be larger than the MaxSize. For example, if a position was opened with 200 shares, 100 shares were sold, and then 100 more shares were bought, the MaxSize would be 200, but the gross size would be 300.