Ann: Hot Chili Welcomes Glencore Investment, page-407

@Xeno7 my strategy would be to place an order before open that your happy to buy the shares at considering your long term expectations of where the SP could go. You may get them you may not as could be frantic in the morning. There is always next week to rethink . The build up of other buyers / sell bids prior to open may give you some idea on refining that number although be aware people will play silly buggers loading false orders and pulling at the last minute and some big players could come in with opening power volume buys. Whatever your bid please double the volume to help shaft the shorters !
No doubt others here will have other views with sound merit that hand worked for them .
I honestly think whatever you buy them at on Friday at you are unlikely to have buyers regret for very long even if you do end up paying a little over end of day close . Good Luck .