The Ulcer Index is a technical indicator that measures downside risk in terms of both the depth and duration of price declines. The index increases in value as the price moves farther away from a recent high and falls as the price rises to new highs. The indicator is usually calculated over a 14-day period, with the Ulcer Index showing the percentage drawdown a trader can expect from the high over that period.While some might view this as simply another tool in their investment arsenal, I believe that UI could be viewed as more than just an index - it's like having x-ray vision for your portfolio. By understanding where potential downside risks lie, you can make better informed decisions about how to protect your investments.