Speculators boosted their net long bets on the U.S. dollar in the latest week to a five-week high, according to calculations by Reuters and Commodity Futures Trading Commission data released on Friday. The value of the net long dollar position was $15.29 billion in the week ended Sept. 17. The net long dollar position had stood at $13.33 billion last week. To be long a currency means traders believe it will rise in value, while being short points to a bearish bias. U.S. dollar positioning was derived from net contracts of International Monetary Market speculators in the Japanese yen, euro, British pound, Swiss franc ... (full story)