Flash crash trader used series of brokers, companies: documents

Navinder Singh Sarao, 36, was arrested in the United Kingdom this week on U.S. criminal charges, and authorities are linking his trades to the flash crash, when about $1 trillion was temporarily wiped out from U.S. stock markets in a matter of minutes. Sarao, a self-described insomniac, also urged authorities to ban manipulative practices by high-speed traders, the documents showed. "I don't like the HFT arena and have complained to the exchange numerous times about their manipulative