Don't Ignore This Chart!

Gilead Gets another Bollinger Band Squeeze


Gilead is in the midst of its fourth Bollinger Band squeeze in the past year. The last four instances foreshadowed pretty strong moves so I will be watching the current squeeze closely for the next directional clue.

A Bollinger Band squeeze occurs when the bands contract and the Bandwidth indicator moves to the low end of its range. The chart shows Bollinger Bands shaded in pink and BandWidth in the indicator window. BandWidth measures the difference between the bands as a percentage of the closing price.

Volatility contracts when the Bollinger Bands narrow and this means traders should prepare for a volatility expansion. Note that the Bollinger Bands do not provide any directional clues. Chartists simply need to wait for the direction of the break. A break above the upper band is bullish, while a break below the lower band is bearish.

The chart above shows GILD with the blue vertical lines marking the squeezes, which is when BandWidth dipped below 5%. The red and green lines show the subsequent breaks. The last four breaks resulted in significant short-term moves in the stock. This means chartists should watch 77.35 for a downside break and 78.64 for an upside break.  

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Arthur Hill
About the author: , CMT, is the Chief Technical Strategist at Focusing predominantly on US equities and ETFs, his systematic approach of identifying trend, finding signals within the trend, and setting key price levels has made him an esteemed market technician. Arthur has written articles for numerous financial publications including Barrons and Stocks & Commodities Magazine. In addition to his Chartered Market Technician (CMT) designation, he holds an MBA from the Cass Business School at City University in London. Learn More
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