<r>Apparently, there were transactions in the private markets that valued the company at $125bn.Most of the people in Asia compare Alibaba to Amazon.com, I've never used it, but would be interested to hear from people who have used it.The justification for this valuation comes from supposed data tha...

<t>GuitarTrader,Most banks now have "auto-fitters" which try to fit the vol automatically. Generally, for option market making fitting the vol surface at least a few times a day is warranted.You should also think about your purpose, fitting the vol assumes that the market generally is correct and fa...