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The Editors

Let There Be Light in U.S. Markets

Regulators can't do their job if they don't know what's going on.
No way to keep up with the markets.

No way to keep up with the markets.

Photographer: Douglas Miller / Topical Press Agency/Getty Images

Renewed volatility in the U.S. stock market raises a question: If a freak event like the 2010 “flash crash” occurred again, would regulators have a better view of what was happening than they did back then?

Not really. And therein lies a crucial challenge for the Securities and Exchange Commission.