The Snap to Primary order is similar to a pegged order, as the original order price is determined by the current bid/ask plus or minus an offset. But unlike the pegged order price, the “snap to” order price doesn’t continue to peg as the price moves. A Snap to Primary BUY order snaps to the bid plus the offset to set the order price. A SELL order snaps to the ask minus the offset. For more information, see the TWS Users’ Guide.


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