Leosghost - 11:56 am on Aug 21, 2012 (gmt 0)

Mr Thiel had already sold shares worth more than $640m during the flotation, taking his total profit to more than $1bn.

Data from financial information firm Markit indicates that the number of investors betting on the shares to fall further - so-called short interest - in Facebook is now at record levels.

[bbc.co.uk...]