all or none order means: This is used in conjunction with general equities. An order for a limited price that must be executed entirely or in part. It is used to test the strengthconviction. An AON order cannot be cancelled, unlike an FOK. It is valid until it has been executed. It is forbidden to make “all or nothing” offers or bids in stock, while the rules of Rule 61 apply to bonds. Because AON orders cannot be traded in parts, they are not listed on specialist’s books. Antithesis of any part-of-order. Refer to FOK Order. (in Stock Market Dictionary)
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