Resistance levels are a large concentration of traders and investors who are looking to sell their shares at, or close to, the same price. The “level” is typically more of a range than a particular price.Sometimes these levels and ranges are clear and well-defined. As you can see on the following chart, that is the case with the $119.75 level for Exxon Mobil Corp XOM. This is why it's the Stock of the Day.Markets are driven by supply and demand. If there is more demand (buy orders) than supply (sell orders) ...