Not necessarily - some Expressive Bids operate entirely on Target Orders. In those cases, simply applying a FIX tag to each Limit Order to reference the relevant bidder logic will create the Expressive Bid. The describes this process in more detail.If you are accessing OneChronos through a broker, ask your broker about how you might take advantage of Expressive Bidding through them with little to no change in your existing workflow. Subscriber Broker Dealers can use Expressive Bidding to complement their algorithm and smart routing strategies, and may also offer OneChronos as a direct market access (DMA) destination to their customers.