If no trailing stop and you bail 2 ticks from where you entered, then where does the 2pt slippage come in? Cause more simply it looks like you're saying, you'll either make a profit of the difference between the open and close minus 1 tick or you'll have a loss of 2 ticks.
Slippage probably wasn't the right word...I adjusted the data downward to be conservative, hence the two points.
It looks like your data is using the index itself vs. the futures. It takes several minutes for the index to catch up to the futures at the open. In short, you cannot buy the SPX at or near the opening price if the futures have already moved.
Great point, sorry about that...k it would be buying or selling the futures based on the price movement in the underlying.