Former Profession: Product manager for a meat-packing firm.

Performance Data: By most accounts, Tom Baldwin is the single largest individual trader in the T-bond pit. His trading size puts him in the same league as the primary institutional players. Single trades as large as 2,000 contracts ($200 million face value T-bonds) are not unusual for him. On a typical day, he may trade over 20,000 contracts (the equivalent of $2 billion in face value T-bonds).

Q. How did you first get interested in trading?

A. I had taken some classes in commodities in graduate school. I wanted to trade, but I didn't have the money to buy a seat. In 1982, I found out I could lease a seat, and that's when I began.

Baldwin was originally profiled in the Market Wizards.

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