yes they are reliable. usually I don't have problems with shorting stocks I trade, but several times it didn't work for cheap stocks. I try to locate on premarket to be sure to get a piece of pie :D Locating fees are from 1 cent up to several bucks, it depends on what exactly you locate
Hi, i have been trading US stocks and now want to expand my competence with commodity futures. What to start with? Any books or online resources you can recommend?