Pathshala: Common Gaps

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What is a ‘Gap’ in technical analysis?</h4>
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A gap is an area on a price chart in which there were no trades. It is easy to see gaps if you take any charts. Let us try to understand gaps in another way. The fluctuations in stock prices are coherent in nature. That means that the price rises or falls gradually.  Thus, in rising scrip, if on one day the low was Rs 100 and the high was Rs 135, on the next day the low would be Rs 130 and the high Rs 140. Here, the low for the next day falls within the high-low range of the previous day. But suppose for the second day, the low was Rs 145 and the high Rs 150. Then, the low for the next day has fallen above the previous day High-Low range, or it was higher than the previous day’s high. So, when one draws bar charts showing High-Lows every day, there would be a discontinuity, termed as a ‘Gap’ in technical theory. An interesting feature of Price gaps is that it gets filled within a short amount of time. That is, the price would come back to fill the price gap of Rs 140 – Rs145, where there was no trade in the previous days.</div>
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In simple terms-a gap occurs when the current bar opens above the high or below the low of the previous bar. On a price chart, a space appears between the bars indicating the gap.</div>
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Gaps appear more frequently on daily charts, where every day is an opportunity to create an opening gap. Gaps on weekly or monthly charts are fairly rare: the gap would have to occur between Friday's close and Monday's open for weekly charts and between the last day of the month's close and the first day of the next month's for the monthly charts. </div>
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Types of price gaps</h3>
Gaps can be subdivided into four basic categories:<br />
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<li>Common Gaps</li>
<li>Breakaway Gaps</li>
<li>Runaway Gaps and</li>
<li>Exhaustion Gaps.</li>
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<h3 class="sectionedit2" id="common_gaps" style="text-align: left;">
Common Gaps</h3>
Common gaps are ‘common’ and ‘uneventful’. If a Gap is formed when the markets are moving in a narrow range, it is called a Common Gap.<br />
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Breakaway Gaps:</h3>
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Breakaway gaps are the exciting ones. They occur when the price action is breaking out of their trading range or congestion area. To understand gaps, one has to understand the nature of congestion areas in the market. A <i>congestion area</i> is just a price range in which the market has traded for some period of time, usually a few weeks or so. The area near the top of the congestion area is usually resistance when approached from below. Likewise, the area near the bottom of the congestion area is support when approached from above. To break out of these areas requires market enthusiasm and, either, many more buyers than sellers for upside breakouts or more sellers than buyers for downside breakouts.</div>
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Volume will (should) pick up significantly, for not only the increased enthusiasm, but many are holding positions on the wrong side of the breakout and need to cover or sell them. It is better if the volume does not happen until the gap occurs. This means that the new change in market direction has a chance of continuing. The point of breakout now becomes the new support (if an upside breakout) or resistance (if a downside breakout). Don't fall into the trap of thinking this type of gap, if associated with good volume, will be filled soon. It might take a long time. Go with the fact that a new trend in the direction of the stock has taken place, and trade accordingly. Notice in the chart below how prices spent over 2 months without going lower than about 41. When they did, it was with increased volume and a downward breakaway gap.</div>
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 A good confirmation for trading gaps is if they are associated with classic chart patterns. For example, if an ascending triangle suddenly has a breakout gap to the upside, this can be a much better trade than a breakaway gap without a good chart pattern associated with it. The chart below shows the normally bullish ascending triangle (flat top and rising, lower trend line) with a breakaway gap to the upside, as you would expect with an ascending triangle.</div>
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<h2 class="sectionedit4" id="runaway_gaps">
Runaway Gaps</h2>
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Runaway gaps are also called measuring gaps, and are best described as gaps that are caused by increased interest in the stock. For runaway gaps to the upside, it usually represents traders who did not get in during the initial move of the up trend and while waiting for a retracement in price, decided it was not going to happen. Increased buying interest happens all of a sudden, and the price gaps above the previous day's close. This type of runaway gap represents an almost panic state in traders. Also, a good uptrend can have runaway gaps caused by significant news events that cause new interest in the stock. In the chart below, note the significant increase in volume during and after the runaway gap.</div>
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Runaway gaps can also happen in downtrends. This usually represents increased liquidation of that stock by traders and buyers who are standing on the sidelines. These can become very serious as those who are holding onto the stock will eventually panic and sell – but sell to whom? The price has to continue to drop and gap down to find buyers. Not a good situation.</div>
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The term <i>measuring gap</i> is also used for runaway gaps. This is an interpretation that is hard to find examples for, but it is a way of helping one decide how much longer a trend will last. The theory is that the measuring gap will occur in the middle of, or half way through, the move.</div>
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Sometimes, the futures market will have runaway gaps that are caused by trading limits imposed by the exchanges. Getting caught on the wrong side of the trend when you have these limit moves in futures can be horrifying. The good news is that you can also be on the right side of them. These are not common occurrences in the futures market despite all the wrong information being touted by those who do not understand it, and are only repeating something they read from an uninformed reporter.</div>
<h2 class="sectionedit5" id="exhaustion_gaps">
Exhaustion Gaps</h2>
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Exhaustion gaps are those that happen near the end of a good up- or downtrend. They are many times the first signal of the end of that move. They are identified by high volume and large price difference between the previous day's close and the new opening price. They can easily be mistaken for runaway gaps if one does not notice the exceptionally high volume.</div>
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It is almost a state of panic if the gap appears during a long down move where pessimism has set in. Selling all positions to liquidate holdings in the market is not uncommon. Exhaustion gaps are quickly filled as prices reverse their trend. Likewise, if they happen during a bull move, some bullish euphoria overcomes trades, and buyers cannot get enough of that stock. The prices gap up with huge volume; then, there is great profit taking and the demand for the stock totally dries up. Prices drop, and a significant change in trend occurs. Exhaustion gaps are probably the easiest to trade and profit from. In the chart, notice that there was one more day of trading to the upside before the stock plunged. The high volume was the giveaway that this was going to be, either, an exhaustion gap or a runaway gap. Because of the size of the gap and the near doubling of volume, an exhaustion gap was in the making here.</div>
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<h2 class="sectionedit6" id="conclusion">
Conclusion</h2>
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There is an old saying that the market abhors a vacuum and all gaps will be filled. While this may have some merit for common and exhaustion gaps, holding positions waiting for breakout or runaway gaps to be filled can be devastating to your portfolio. Likewise, waiting to get on-board a trend by waiting for prices to fill a gap can cause you to miss the big move. Gaps are a significant technical development in price action and chart analysis, and should not be ignored. <i>Japanese candlestick analysis</i> is filled with patterns that rely on gaps to fulfill their objectives.<br />
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What is a ‘Gap’ in technical analysis? A gap is an area on a price chart in which there were no trades. It is easy to see gaps if you ta...