As I'm aware, finance industry now prefers F#. Regarding Haskell - one of its biggest user (Standard Chartered I think) uses in-house dialect of it, miu, which is strict. Basically, it just syntactically resembles Haskell... i.e. you can't just use some random Haskell library with it.
Where did you hear about this? Googling around for "miu", "miu haskell", "miu haskell standard chartered", "miu haskell standard chartered strict", etc hasn't given me anything.
