July 4th, 2012, 2:06 pm
In the past, in EUR there was all sorts of other stuff that used to systematically supply vol into the mkt. For example, EUR sovereigns, such as Italy, used to sell long-dated receivers (it was a "hedge" plus some yield pickup from the vol). Obviously, this isn't really happening any more. The alternative source of vega is callable issuance, but that has been slow to materialize.