Let me rephrase/add to my initial question:
How can I best execute volume equivalent to 1 - 3% of ADV in such a way that the fill price approximates the Globex /Eurex "Open" price or the Globex/Eurex "Close" price?
Guidance as to trade execution mechanics: order type, order time, use of algos, etc will be very helpful and appreciated.
Many Thanks.