futures, commodities, everything from apple stock to the price of gas, orange juice to the price of mortages, and some think there's nothing to worry about, like the former chief's economist. >> are the markets broken? i would say not. i can think back 150 years ago when the telegraph was invented. you had many of the same issues arrive. same thing when computers or the telephone came to the trading area. for mum and pop, focussing on the long term, being an investor, ultimately you are okay. >> others call for more regulation, saying high frequency traders have an unfair advantage. regulators are investigating relationship with exchanges. the outgoing commissioner calls traitors who use high frequency trading programs cheetahs. he worries that they and high powered technology are running wild in the mark. >> technology is great. we love technology, i don't love technology out of markets. currently there's no rules or regulations. zero, nada. i'm concerned that the high frequency cheatas may be rorting the market. >> regulators say high frequency trading tributed to a crash in 2010. where th