USD/JPY bid but holds under 109 ahead of Powell testimony • USD/JPY bid on Gotobi Tokyo fix demand, Asia 108.85 to 108.99 before fade • Offers ahead of 109.00 vacuumed but plenty more at 109.00, beyond • Some specs eyeing stops 109.00+ but Japanese exporters, option players await • USD 1.8 bln 109.00 option expires today, tomorrow 109.00-50 total 3.5 bln+ • US yields firm pre-Powell testimony, Tsy 10s @2.074%, Asia high 2.086% • Powell talk tonight could prove decisive for USD going forward