This is an order that brokers and dealers may accept from a client, but that they do not obligate themselves to abide by in the same way they would for the execution of a market order. A Not Held order means the broker who accepts it is not held responsible if the order cannot, or is not, executed at the specified price, or time, or for any other reason. An OCO, or order cancels order trade entry could be an example of a “not held” order by a broker.