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High Frequency Traders want to start using High Frequency radio for financial data
(www.radioworld.com)
This is a most excellent place for technology news and articles.
That’s plenty of data to trade on. If you believe in efficient markets the priced should be more or less the same globally, you can make a lot of money if you know what the market price in Tokyo should be because you know the price in NY first, or vice versa.