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understanding the slippage model

Hi, Let's say I place an order for 100 shares of some security, and the presumed minutely data says that i can only fill 30 shares per minute and consequently, my order is broken into 4 orders, {30, 30, 30, 10}. Does that imply that under default commission model, i will be paying $3 for this transaction in commission?

2 responses

$4. The commission structure is not described in enough detail. Experience shows that there is a $1.00 minimum per fill, not per order.

oh yeah. $4.

And a $4 sell, X100 trades a day, $800, X252 days a year, $201,600 on commission alone. The over aggressive slippage model feels like it is biased against higher freq trading that would be very profitable in the real world. I know I can redefine the commission and slippage, but at least for the contest, you need to set it to default.