Ann: 2013 Annual Report , page-5

or just maybe....someone held a long dated option/warrant etc that enabled them to sell at $3
Im tipping that is the most likely occurrence
i suspect they are going higher over time, just wish i'd loaded up sub $1, although still look value at the moment
very interesting times in the alumina, aluminium markets, demand is exploding, supply outside of china is being cut, china is reviewing overcapacity, indonesia are restricting bauxite supply, massive drought in brazil, warehousing at the LME.....Rusal looking for debt restructure....premiums for physical delivery are through the roof
lots of interesting aspects, together with institutional money mopping up AWC