Stocks App and Widget not showing DOW. Why? Kinda an important one....

Yep, both are available DOW, the company and ^DJI, the Dow Jones Industrial Average. Use the search field, then add it to your list of apps that shows in your screenshot. Since you are viewing My Symbols and it doesn't show, it just means you have not added it.

Do you mean DOW, the company, or the Dow Jones Industrial Average? I see both when I enter DOW into Search at the top of the screen.