The US Commodity Futures Trading Commission (CFTC): In the week ended June 17, speculators increased their net long position in COMEX gold by 6,775 lots to 136,626 lots; increased their net long position in COMEX silver by 1,240 lots to 5,034 lots; and reduced their net long position in COMEX copper by 3,051 lots to 23,625 lots.