LIMIT ORDER DISPLAY RULE is an SEC Order Handling Rule requiring a Market Maker that receives a customer limit order priced at or better than its current quote and that does not immediately execute the order, to display the order to the entire marketplace. Alternatively, the Market Maker can choose to send the order to another Market Maker or ECN for display. There is no limit order display rule on the OTCBB.
NON-DISCRETIONARY means it is mandatory, not up to the individual or company.
JCO is Justification for Continued Operation.
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