Why is my T-Bill order not trading?

In order for IBKR to route a Pink/OTC order, the client must enter a marketable limit order that meets the Minimum Quotation Size listed below. If your order is not marketable then you will receive the reject message "No route for non-marketable order that does not meet the Minimum Tier size”.  Please note, it is possible that ArcaEdge may hold a non-marketable order if they are quoting the symbol. …

Any size stock order, even if it is not in a round lot increments, can be submitted using a MOO, LOO, MOC or LOC order type. When you SMART route an At-the-Opening or At-the-Close order type, it will be routed to that symbol's primary listing exchange and given to the Specialist. There is never a guarantee that the Specialist will have enough shares available to match all the Buy and Sell orders they receive for an opening or closing cross. Orders are filled on a priority basis with the earliest submitted Market-on-Open orders filled first. If there are any shares still available to cross, the marketable Limit-on-Open orders with the earliest time stamps are next in line. If your order did not get filled, then there were not enough shares available for all of the orders submitted for the Opening or Closing cross trade…

Time & Sales data in both the paper trading and free trial accounts is based upon actual trades, not simulated trades. As a result, while a simulated order is executed on the basis of real-time quotes, it is not reported in actual Time & Sales. You will, however, be able to use actual Time & Sales as a reference for the market as it existed at the time of your order submission and execution…

When you get the Large Order Size message you may not want to take the time to create and then edit additional individual orders. You can use the "Create Duplicate" feature in Classic TWS to create these orders for you. To use the "Create Duplicate" feature, start by creating a new order in Classic TWS and adjust the amount to a smaller quantity that will be accepted. Right click on the order row and select "Create" from the pop up menu (you may have to expand the menu by clicking on the small circle at the bottom). Select "Duplicate" from the side menu. This will create another separate order with the identical order details. After creating additional identical orders, you can transmit all of the orders at one time by going to the top of Classic TWS and clicking on the "Trade" menu followed by Transmit and "Transmit All Orders on Page" (or any of the other available choices). Please note, you can also use the "Create Duplicate" feature when right clicking on an order row for an open working order. …