A market figure is someone who is involved in the stock market. A SELLER is someone who sells stocks, bonds, or other investments. An INVESTOR is someone who puts money into stocks, bonds, or other investments with the expectation of making a profit. The Dow is an index that tracks the performance of 30 large publicly owned companies in the United States. A TRADER is someone who buys and sells stocks, bonds, or other investments in order to make a profit.