Commodity exchanges, like the Chicago Board of Trade, place limits on the number of contracts a firm can hold. USAToday reports that the Securities and Exchange Commission has proposed similar caps on derivatives markets. The proposal would limit firms that trade derivatives to 20% of the clearinghouses, exchanges and other trading venues. Banks that trade derivatives are now subject to new requirements for holding capital reserves as a cushion against loss.
The derivatives market is massive -- a $600 trillion market worldwide. In the U.S., five big banks -- Bank of America (BAC), Citigroup (C), Goldman Sachs (GS), JPMorgan Chase (JPM), and Wells Frago (WFC) -- account for 97% of the total derivatives held by the U.S. banking industry.
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For the past few weeks we've been hearing cries from Europe concerning how to regulate or ban derivatives trading. Now the word has crossed the pond and we are hearing the same complaints here in the U.S.
Derivatives were 

