Hi,
OK I think I know what the problem was and I didn't see this option documented anywhere.
When I place an order at market, there is a box below it "Limit".
I'm guessing if I do not enter a limit then TWS buys the first available amount of stock at whatever price and cancels the rest of my order. In otherwords the "Limit" becomes that price?
If I place a market order and set the limit to $0 (zero dollars) then it will buy whatever is available down to whatever price.
Is the correct please?
Thankyou, Sabai.