Stock Market


Tue August 21, 2012
Planet Money

Episode 396: A Father Of High-Speed Trading Thinks We Should Slow Down

Originally published on Wed August 22, 2012 2:25 pm

Thomas Peterffy, shown here in 2010
Brendan Smialowski Getty Images
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Thomas Peterffy's life story includes a typing robot, a proto-iPad, and a vast fortune he amassed as one of the first guys to use computers in financial markets.

On today's show, Peterffy tells us his story — and he explains why he's worried about the financial world he helped create.

We learned of Peterffy's story from the forthcoming book Automate This.

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Sat August 18, 2012

In Wall Street 2.0, Computers Are King

Originally published on Sat August 18, 2012 1:03 pm

Weekend Edition Saturday host Scott Simon talks to Sean Gourley, physicist and founder of, about the computers that trade stock shares faster than human minds can comprehend.


Thu August 16, 2012
The Two-Way

Facebook Shares Battered As Insiders Are Allowed To Sell

Originally published on Thu August 16, 2012 1:42 pm

An illustration of an Apple iPhone displaying the Facebook app's splash screen in front of the login page.
Karen Bleier AFP/Getty Images

At one point today, Facebook's stock price sunk to a new low. At about $19.69, it was worth about half of what it was initially sold for in May.

Bloomberg explains that what is happening is that early investors in the company — including founder and CEO Mark Zuckerberg — were allowed to sell some of their stocks for the first time today.

Bloomberg adds:

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Thu August 2, 2012
The Two-Way

Knight Capital Says It Lost $440 Million Because Of Computer Glitch

Originally published on Thu August 2, 2012 1:39 pm

Remember the computer glitch that caused market turmoil Wednesday morning?

As we told you, it was caused by a computer glitch that accidentally forced Knight Capital Group to buy a great number of stocks.

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Wed August 1, 2012
The Two-Way

Sharp Swings In Stocks Renew Concerns About Computer Trading

Originally published on Wed August 1, 2012 1:58 pm

"August 1st will be another day that will destroy investor confidence just like the May 6th [2010] flash crash."

That rather ominous sounding pronouncement comes from Joseph Saluzzi, co-head of equity trading at Themis Trading LLC in Chatham, N.J., in a Bloomberg News report about what happened early this morning on Wall Street.

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