In technical analysis, a chart formation of a stock or a market index that has attempted to penetrate a lower price level on three different occasions. If the stock price or index actually breaks through on the downside during the third attempt, it is a bearish signal and the investor should sell or sell short the stock or index. If the stock or index is unable to penetrate the price level, it is a bullish sign that the price is at a strong support level. Compare triple top.
