Rectangles combine the ideas of support and resistance into a single chart pattern. When prices encounter a resistance level, they often fall. At support levels, prices often find a short-term bottom.
In a rectangle pattern, prices move between support and resistance for some time. This is a consolidation pattern, and it is often seen after a sharp price move.
How Traders Use It
By itself, the pattern doesn't offer any clues as to the direction of the next trend. But traders use the rectangle pattern to identify potential trades.
For example, after falling nearly 90% when the Internet bubble burst, Cisco Systems (NASDAQ: CSCO) formed a year-long rectangle on the chart. This allowed traders to see that the worst of the decline was indeed over, and many who spotted rectangles in tech stocks prepared for a new bull market. When CSCO finally broke out of the rectangle, the price almost doubled in just six months. Had the rectangle broke to the downside, it would have been a sign for traders to go short.
After a breakout from a rectangle, prices often briefly move back into the pattern. Most traders will wait for this to happen before taking action.
Confirmation can be found with time, i.e., a breakout lasting several weeks is likely to be the start of a new trend. Other indicators, like oscillators, can also be used to confirm the breakout. An oscillator such as Moving Average Convergence/Divergence (MACD) should be bullish to confirm an upside breakout and bearish to confirm downside moves.
Why It Matters To Traders
Consolidations usually occur before significant market moves, and the rectangle pattern is a signal that a move is likely to begin soon. Knowing a market is in consolidation, traders can watch the chart to see when the breakout occurs.
Like several other chart patterns, the rectangle also offers a way to determine a price target.
After the breakout, traders expect the price to move by the height of the pattern in the direction of the breakout. If the top of the rectangle forms near $20 a share and the bottom is near $10, the $10 range offers a guide as to the size of the move that should follow the breakout. So, if the stock closes above $20, traders would expect it to eventually reach $30.
Price targets are useful when the trader spots several different trading opportunities. Many traders will take the trades that have the most potential reward and pass on those that have lower projected gains.
(This article originally appeared on ProfitableTrading.com.)