High Frequency Trading (HFT) has been a popular topic in recent years, and the most recent edition of the Financial Analyst Journal published an editorial by Larry Harris, CFA, a finance professor at USC's Marshal School of Business, which discusses the types of HFT that are beneficial to capital markets and that which are harmful. We posted a link to the article here.
Regulators must be careful to not take actions that could hinder market liquidity. Mr. Harris discusses the "technological arms race" between HFT firms, the harm to market liquidity if someone wins that race, and steps regulators can take to prevent someone from winning that race.
