SEC Proposes Forcing High-frequency Trading Firms To Register

The Securities and Exchange Commission on Wednesday voted to propose a rule that would force high-speed trading firms to register. Such high-speed trading firms, when they conduct business only for their own accounts, are currently exempt from registration with the Financial Industry Regulatory Authority. The rule that allows this exemption hasn't been substantively amended since 1983, the SEC says. The Michael Lewis book "Flash Boys" has brought more scrutiny on high-frequency trading.