RE: Processing order3 Apr 2020 14:50
MDC1
I am not sure that you are correct in saying that a market maker must deal in 300,000 (in the case of Greatland) if your order is for more than that number.
When I was a stockbroker many years ago in the days when all deals were done over the phone, if the client's order was for more than the market size you would phone a market maker and ask what he would quote for more. If the quoted spread was say 4.5 - 4.6 he might say 0.2 out in 400,000 one way. He would not know whether you were buying or selling, and you would not know whether he was prepared to deal in 400,000 at 4.52-4.6 or 4.5 to 4.62. You could say thanks very much I will try elsewhere, and you would then see whether someone else might quote you, for example, 0.1p out one way. You might be lucky and find that another market maker might quote you 0.1p out in 400,000, so in effect his price is 4.49-4.61 in up to 400,000 irrespective of whether you were buying or selling, and you could decide to deal with that market maker. The first market maker was therefore not required to deal in the market size of 300,000 shares.