as far as I understand odd lot trading on Amex is not allowed. (for example 5 orders of 98 shares / with total of 490 shares). What will happen to a trader who is sending these type of orders to specialist book. What will happen when these trades are routed trough ECN, as far as I understand some ECN will accept this, although fees will be much higher.
amex charges alot i beleive 3 cents a share. i believe you must use ISLAND without route out on to keep it cheap. ARCA is expensive almost 3 cents a share.... soes is cheap also... pleae correct if i am wrong..