Not too difficult to bash this one I'm afraid.
The idea that it's back to 11k means a holder of the index / diamonds basically made nothing over the last 5 yrs. I don't care if it's Clintons or Bushs fault, 0% return just isn't great.
In essence, if you bought the index this morning and held until close, you would have done better than someone holding it for the last 5 yrs straight. Performance indeed!
AM