Lizzy...When the buyer establishes an open order to buy X amount of shares from his "go to guy" on the third market...and the price keeps changing upwards from the time the order was placed, at what price is the order finally executed at, between the "go to guy" firm and the buyer?
e.g.....If the "go to guy" is sitting on the bid and the bid keeps going WAY UP, beyond what the buyer originally intended to pay, is the buyer still committed to pay the total price for the open order?...TIA