The president formed a task force, which recommended coordinated circuit breakers across the stock, futures and options exchanges.

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The group also committed to advance sustainability reporting through the World Federation of Exchanges, a trade association of 54 publicly regulated stock, futures and options exchanges.

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The market for these products is growing rapidly, both on futures and options exchanges and in private sales, which tend to be more complex and more lucrative.

ECONOMIST: New dangers

Eurex, an on-line system owned by Swiss and German exchanges, has whittled the London International Financial Futures and Options Exchange's share of the German bund futures contract from 70% to 10%.

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They gathered orders and put the trades across 9 exchanges and 43 markets, including lots of futures and options in Chicago.

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The exchanges plan to develop a single set of futures and options contracts in preparation for the euro.

ECONOMIST: Derivatives exchanges

Stocks trade on dozens of exchanges, automatic trading systems, dark pools and crossing networks these days, and trading in futures and options markets affects trading in the cash markets.

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