The American commodity exchanges offer 50 to 60 markets. Will someone please point me in the right direction, towards the top Futures and Options exchanges outside the US, that American traders gravitate towards, when searching for more variety. An example would be Lead, Tin, and Nickel on the London exchange. I've researched this, but there's so many exchanges outside the states. For those posessing this knowledge, would you please direct me to the top 2-3 where daily volume and open interest is highest for Futures Contracts and Options. Thanks for the help.