Les 4 banques JP Morgan Chase, Citigroup, Bank of America et Godman Sachs détiennent 95% des contrats sur les produits dérivés.
4 Wall St. Banks Still Dominate Derivatives Trade - NYTimes.com
►http://dealbook.nytimes.com/2011/03/22/4-wall-st-banks-still-dominate-derivatives-trade
The nation’s four largest banks — JPMorgan Chase, Citigroup, Bank of America and Goldman Sachs — hold nearly 95 percent of the industry’s total exposure to derivatives contracts, the report found.