3. HFT Tax
Transaction taxes could very quickly put a brake on numerous undesirable activities: high frequency trading, the explosion in derivatives and overuse of repo financing. You might collectively think of these things as "junk liquidity" or "junk trading."
Greg MacSweeney is editorial director of InformationWeek Financial Services, whose brands include Wall Street & Technology, Bank Systems & Technology, Advanced Trading, and Insurance & Technology. View Full Bio