What companies has David Schwed worked for in the financial sector?
David Schwed has worked for Bank of New York Mellon, Merrill Lynch, Salomon Smith Barney, and Citigroup.
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### Instruction:
What companies has David Schwed worked for in the financial sector?

### Input: Not applicable

### Response:
David Schwed has worked for Bank of New York Mellon, Merrill Lynch, Salomon Smith Barney, and Citigroup.<|im_end|>