I have heard figures of US$400B for Singapore SWFs.
Buffet is down 50% and he bought Goldman 1 year after GIC/Temasek bought Citibank, UBS, ML, SCB, Barclays. So our losses are a whole lot more. We hold lots of real estate and these are mainly grade A offices buildings in major cities usually rented to people like ML, Lehman brothers, Citibank .....
I would not be surprised if Singapore SWF is down at least 50% (lets say we are as good as Buffet - but then remember that he entered the market 1 year after we did) which means a $200B loss. In fact I would not be surprised if our portfolio is down 65% (after all we have a habit of seeing our investments go into bankruptcy - Shin Corp, ABC Learning, ML less than 6 months after we buy them).
SO a 65% decline for $400B is $260B drop!
Of course this is pure speculation, coffee shop talk and I might be wrong.
You sure 50B only? What about UNDECLARED? Or some money lost unknow? Afterall, you know anyone who audit LKY pockets?