Jan contracts expire on Monday. Feb is already trading $1 up but the dip started midday yesterday before TLW's dramatic finish and gains on BUR and DNX were sustained so futures prices and e+p company share value do not always correlate. Yesterday's action was rather strange to say the least. I expect a good bounce for Brent and Nymex next week.
azalea: there should be an announcement every 1% threshold passed after 3% unless all bought in one trading day. The traded volume recently does not confirm the latter so I think (haven't looked yet) they would previously held between 9% and 10% unless a mistake has been made. I note that M+G hold for the Pru.
I have checked back on holdings announcement and can't see any reference to M+G. L2 shows major holdings at 7/12/2004 (!) with M+G holding 5.43%. If the 10% is fact someone has been a bit naughty.