All Or None - AON


All Or None - AON
A condition used on a buy or sell order to instruct the broker to fill the order completely or not at all. If there is insufficient supply to meet the quantity requested by the order then it is canceled at the close of the market.

For example, if you send an AON order to your broker requesting 200 shares at $15, the broker will not fill the order unless he or she can obtain the 200 shares at $15. This prevents investors from having orders half filled before they expire. This is contrary to a common limit order, which is commonly partially filled. For example, if 150 shares trade at $15 and then rise to $17, the 150 shares will be purchased by the investor with the limit order and the remainder will be bought when the shares fall back to $15. If the trader had an AON order then he or she will not receive any shares and will have to resubmit the order the next day to buy the 200 shares at $15.


Investment dictionary. . 2012.

Look at other dictionaries:

  • all-or-none — ȯ lər nən adj marked either by complete operation or effect or by none at all <all or none response of a nerve cell> …   Medical dictionary

  • all-or-none — (ôl ər nŭnʹ) adj. Characterized by either a complete response or by a total lack of response or effect, as in neurological action above a threshold: “Nerve impulses follow the All or None Law that is, a nerve impulse generated by a weak stimulus… …   Universalium

  • all-or-none — all′ or none′ adj. 1) of or pertaining to a process by which a muscle or nerve fiber either responds to a stimulus completely or not at all 2) all or nothing • Etymology: 1900–1905 …   From formal English to slang

  • all-or-none — adjective occurring completely or not occurring at all • Syn: ↑all or nothing • Similar to: ↑complete * * * | ̷ ̷ ̷ ̷| ̷ ̷ adjective : occurring either completely or not at all : marked either by entire, complete, inclusive, or unqualified… …   Useful english dictionary

  • all-or-none — adjective Date: 1900 marked either by entire or complete operation or effect or by none at all < all or none response of a nerve cell > …   New Collegiate Dictionary

  • all or none — See Bowditch law. * * * (awl or nun) 1. the principle that the heart muscle, under whatever stimulus, will contract to the fullest extent or not at all; stimulation of any single atrial or ventricular muscle fiber causes the action potential to… …   Medical dictionary

  • All or none — Requirement that none of an order be executed unless all of it can be executed at the specified price. The New York Times Financial Glossary …   Financial and business terms

  • All or none —   A contract condition that the full amount of an order to buy (or sell) securities be executed at an agreed price. A lesser amount is not acceptable …   International financial encyclopaedia

  • all-or-none law — n a principle in physiology: in any single nerve or muscle fiber the response to a stimulus above threshold level is maximal and independent of the intensity of the stimulus * * * see all or none …   Medical dictionary

  • All-or-none law — The all or none law is the principle that the strength by which a nerve or muscle fiber responds to a stimulus is not dependent on the strength of the stimulus. If the stimulus is any strength above threshold, the nerve or muscle fiber will… …   Wikipedia

  • all-or-none law — /awl euhr nun /, Physiol. the principle that under given conditions the response of a nerve or muscle fiber to a stimulus at any strength above the threshold is the same: the muscle or nerve responds completely or not at all. [1895 1900] * * * ▪… …   Universalium