英文名称：Downside 中文名称：下跌
1. 指证券或商品价格的瞬间跌落；
2. 总体市场或个别股票可能下跌的幅度。

The dollar amount by which the market or a stock has the potential to fall.

You might hear someone say that the downside on stock XYZ is $10. What that means is that the stock could fall by this amount if things got bad. Downside is usually gauged by either fundamental or technical factors.