Volatility contractions often precede volatility expansions. This is the rational behind Bollinger Bands. After surging above 5.5, Ford (F) formed a long consolidation and Bollinger Bands contracted as the range narrowed. The subsequent move above resistance and the upper Bollinger Band triggered the volatility expansion (breakout). Note: This is an educational post featuring a technical analysis technique.
To find stocks with narrowing Bollinger Bands, use the Market Carpet tool and select Bollinger Band width.