Hi awoodj
perhaps I did not make myself understandable, therefore I will give an example.
BP BID OFFER
482.25 482.5
With CMC I would hope to buy at 482.5 or sell at 482.25.
With a DA broker I would hope to buy at 482.25 or sell at 482.5.
If for some reason I needed to exit immediately after entering, with CMC I would hope to lose only 0.25 points, whereas with a DA broker I would hope to make a 0.25 point profit. Therefore I clearly gain an advantage by trading within the spread with a DA broker.
However, this advantage does come at a cost - the commissions of approximately 0.15%.
What I am trying to find out is if this advantage within the spread gained through DA over the non-DA zero commission broker/booky (i.e. CMC) remains in tact after commissions have been deducted, or is it completely wiped out and more so?
I haven't done the maths as yet, but thought perhaps somebody else might have.
Thanks.