The best traders understand that certain price levels in the financial markets are more important than others. They also know how to identify them. These are called support levels and resistance levels.An important dynamic of the markets is how price levels that had been support can convert into resistance, and how price levels that had been resistance can convert into support. The chart of FedEx Corporation FDX shows clear examples of this. This is why it is our Stock of the Day.As you can see, the $289 le ...