Speculators increased by more than half their bets that the dollar will strengthen last week, piling on net wagers worth $17.8 billion as of Nov. 29. That represented the largest net position in favor of the dollar since June 2010, data from the Commodity Futures Trading Commission's weekly report on the commitments of traders showed Friday. The 54% jump in optimistic bets on the dollar's rise comes during a period of high global tension over the fate of the euro and Europe's economy. Investors have abandoned the common currency as fears about European countries' fiscal woes have taken hold. Last week the market held ... (full story)