and, 21 trades= 21 buys and 21 sells, means you always sell before you buy more on the same stock? or you never combine orders? eg, if I buy 10000 BLY @ 24 and 10000 @23.5 then sell 20000 @ 25, you consider it one trade or 2trades? I found it's hard to describe that is why I said 11 buys and 7 sells.
