(Bloomberg) -- Trying to understand what causes flash crashes is no longer just for financial regulators and Wall Street. It’s a big deal in Silicon Valley too.

Since billions of dollars were erased from U.S. stocks in May 2010, the U.S. Securities and Exchange Commission has been trying to create a massive repository that would track stock and options trading from exchanges and broker-dealers on a daily basis. That way regulators could quickly go back and find clues to what caused a market interruption.

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