To dream of the Dow Jones Industrial Average may reflect feelings about how well people think you are doing financially. It may also reflect your level of confidence in your financial performance or track record of success. Preoccupation some some kind of indicator of whether or not you are a loser.
Negatively, the Dow Jones may reflect anxiety about your finances. Feeling that you are in a slump or slow down. Feelings about yourself performing poorly in life.
Example: A woman dreamed that the dropped to 400 and felt herself becoming depressed. In waking life she was pregnant and had to take maternity leave while her husband was out of work. She was experiencing anxiety about her finances.