Today's tradingIt has to do with Deletion with TSX 60. Eldorado received same treatment with close to 7% and it was previsible.
Look at who sold and who bought. Every index fund replicating the TSX 60 had to sell YRI and ELD before June 19th the date where both of them will be removed form this index.
That explain the volume and interestingly also is the fact that anonymous bought the major part today close to 7,4 M shares.
Some trading also took place especially with Cormark Securities where the sold the exact same number of shares that they bought......