Does anyone know of a brokerage firm that allows you to participate in arbitrage?

Question

i.e buy a stock on say the german exchange and sell it on the new york stock exchange

Answer 1

There should be no brokerage firm that "disallows" arbitrage. If you have found one that does, you should report them to the SEC. The problem may be that they simply don't offer stocks on the foreign exchange.

With the advanced technology today, and computers that constantly screen and compare prices, the bigger financial houses make this almost impossible to profit from for the smaller investor.

You're probably not taking into account the bid/ask spread, slippage, and brokerage fees, especially of the foreign exchange.

Answer 2

Look into the arbitrage funds offered by ABN AMRO or any European bank