Can I use the Iceberg order type with fractional shares?
The following order attributes for order privacy are supported for fractional shares:
Hidden
Iceberg/Reserve
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TWS messages - Order quantity must be fully displayed for this instrument
Order types which provide privacy by either hiding the entire order quantity (i.e. hidden orders) or allowing the display of only a specified portion of the submitted order quantity (i.e. iceberg/reserves) are not supported for all product types and venues…