Sam Mamudi, Bloomberg

NYSE open to major changes in market structure debate, CEO says

By Sam Mamudi, Bloomberg | October 10, 2013

NYSE Euronext, the biggest U.S. stock exchange owner, is willing to consider major changes to how it does business as part of a discussion on reworking the structure of American markets, according to Chief Executive Officer Duncan Niederauer.

Knight Capital agrees to $12 million settlement for 2012 errors

By Sam Mamudi, Bloomberg | October 17, 2013

Securities regulators fined Knight Capital Americas LLC $12 million for the trading malfunction that roiled the U.S. stock market in August 2012, saying the firm ignored dozens of error messages before its computers bombarded exchanges with millions of unintended orders.

Bats-Direct Edge merger puts broker-owned venues back on top

By Sam Mamudi, Bloomberg | January 31, 2014

Bats Global Markets Inc.’s merger with Direct Edge Holdings LLC will put a broker-owned stock exchange operator in the top ranks on Wall Street for the first time since NYSE Euronext and Nasdaq OMX Group Inc. went public.

Does speed kill, markets?

By Sam Mamudi, Bloomberg | February 20, 2014

Trading is now effectively non-stop, with transactions measured in millionths of a second. Budish, an associate professor of economics at the Booth School of Business, proposes to instead segment trading into thousands of auctions throughout the day.

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