The eurodollar exchange rate fell to its lowest level since July 2010, down 0.8% to 1.2577.

FORBES: Europe Imploding Again: Get Ready For The 3PM Press Conference

Eurodollar futures and options, where investors hedged or speculated on the interest rate paid on a 90-day deposit of a dollar overseas, were half of the Merc's business, with 1.5 million contracts traded per day.

FORBES: Up From the Pits