Inquiry Stokes Unease Over Trading Firms That Shape Markets


By LANDON THOMAS Jr.
New York Times
Published: September 3, 2009


LONDON — Its superfast, supersecret oil trading software was called the Hammer.

And if the Commodity Futures Trading Commission is right, the name fit well with an intricate scheme that allowed commodity traders in Chicago working for Optiver, a little-known company based in Amsterdam, to put their orders first in line and subtly manipulate the price of oil to the company’s advantage.

Transcripts and taped conversations of actions that took place in 2007, included in the commission’s case, reveal the secretive workings of high-frequency trading, a fast-growing Wall Street business that is suddenly drawing scrutiny in Washington. Critics say this high-speed form of computerized trading, which is used in a wide range of financial markets, enables its practitioners to profit at other investors’ expense.

Traders in the Chicago office of Optiver openly talked among themselves of “whackingâ€