
Broken Markets: How High Frequency Trading and Predatory Practices on Wall Street Are Destroying Investor Confidence and Your Portfolio
Sal Arnuk is partner, cofounder, and co-head of equity trading of Themis Trading, LLC, a leading independent agency brokerage firm that trades equities for institutional money managers and hedge funds. Arnuk has extensive experience in equities trading and is an expert in electronic trading and market structure. Prior to founding Themis in 2002, he was with Instinet Corporation, where he headed the team responsible for equity sales and trading for institutional money managers, for more than 10 years.
Learn
• Why retail investors are pulling their money out of stocks in unprecedented amounts
• How decades of regulation created the broken markets we have today
• Why there are more than 40 exchanges, sub-exchanges, and dark pools rife with conflicts of interest where stocks are traded today
• How the stock exchanges became for-profit companies and fundamentally changed market structure
• Why the Flash Crash happened―and why it will happen again
• How there are two markets―the fast, accurate one that high frequency traders see and the slower one that retail and institutional investors see

A Congressional hearing into the GameStop mania that triggered the largest weekly selloff since late October is underway, with some of the key players in the saga—billionaire Citadel CEO Kenneth Griffin, Robinhood CEO Vladimir Tenev, Reddit Cofounder Steve Huffman and the 34-year-old securities broker behind the Roaring Kitty online persona—all set to testify.
One of the most outspoken retail traders on Reddit’s WallStreetBets discussion board has been targeted in a proposed class-action lawsuit alleging the 34-year-old securities broker behind the widely followed “Roaring Kitty” persona committed securities fraud for misrepresenting himself as an amateur trader online while pumping up GameStop stock prices.