Still learning the ropes but i placed an order for $1000 worth of shares on Wed around 3.45pm and had it to expire for that day at a price a bit lower than what the current bid was. The trade did not go through and glad it didn't as i changed my mind and wanted to invest a lot more than $1000. The next day i seen that my order was executed and was crossed trade. So now if i want to buy more shares that means i will be out another $20 for the trade (through commsec). Am i missing something here? I mean i had it at the price i wanted to buy the shares for only good for the day? Did commsec neglect my instructions or am i missing something?