Speculative traders increased net long Japanese Yen positioning to 10,796 contracts in the week ending September 8, the highest level in six months, while Japanese retail investors increased yen short positions against the dollar by 50% to 2.886 trillion yen, or about $18.6 billion. The divergence comes as the yen rebounded to a seven-month high of 152.89 per dollar and markets priced roughly an 80% chance of a Bank of Japan rate increase, creating potential for further gains if retail short positions are unwound.