Many many things can go wrong with these prices. Last I checked Sigma has no contracts, new technology can emerge to replace whatever they are cooking, the company can even go bankrupt.
So yes, many things can go wrong with these prices.
If you don't agree, please list out reasons why you guarantee that nothing can go wrong with these prices.
I'm still here though, holding, very cautiously.
News 
Market Data 
Discover 
