The following is a list of the Predefined Scans currently available on StockCharts. Each scan contains a brief explanation and, as appropriate, a link to a ChartSchool topic containing more detailed information on the underlying topic.

In order to keep the number of scan results from being excessive, all Predefined Scans look for stocks which trade an average of at least 40,000 shares per day over the past 20 days.

Technical Indicators

Bullish Technical Indicators

New 52-week highs:
Intraday high tops highs from previous 52 weeks.

Strong Volume Gainers:
Volume is four times greater than the 20-day SMA and is above yesterday's close.

Bullish 50/200-day MA Crossover:
The 50-day moving average crosses above the 200-day moving average.
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Bullish MACD Crossover:
MACD line crosses above the signal line.
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Oversold with Improving RSI:
RSI crossed above 30 and is higher over 4 consecutive days.
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Moved Above Upper Bollinger Band:
Price crosses above the upper Bollinger Band line.
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Moved Above Upper Price Channel:
Price crosses above the upper Price Channel line.
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Moved Above Upper Keltner Channel:
Price crosses above the upper Keltner Channel line.
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Improving Chaikin Money Flow:
Chaikin Money Flow rises above .20 after being below .20 for the previous 4 days.
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New CCI Buy Signals:
CCI crosses above 100 after being below 100 for the previous 2 days.
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Parabolic SAR Buy Signals:
Price crosses above the SAR ("Stop and reverse") line.
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Stocks in a New Uptrend (Aroon):
Aroon oscillator crossed above 50.
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Stocks in a New Uptrend (ADX):
ADX line crossed above 20.
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Gap Ups:
Today's low is greater than yesterday's high.
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Breakaway Gap Ups:
A gap above a previous level of resistance.
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Runaway Gap Ups:
A gap up, typically on increased volume, during an uptrend.
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Island Bottoms:
Occurs when the price gaps down for one or more trading days and then gaps up.

Bearish Technical Indicators

New 52-week lows:
Intraday low is below the lows of the previous 52 weeks.

Strong Volume Decliners:
Volume is four times greater than the 20-day SMA and is below yesterday's close.

Bearish 50/200-day MA Crossover:
The 50-day moving average crosses below the 200-day moving average.
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Bearish MACD Crossover:
MACD line crosses below the signal line.
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Overbought with Declining RSI:
RSI crossed below 70 and is lower over 4 consecutive days.
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Moved Below Lower Bollinger Band:
Price crosses below the lower Bollinger Band line.
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Moved Below Lower Price Channel:
Price crosses below the lower Price Channel line.
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Moved Below Lower Keltner Channel:
Price crosses below the lower Keltner Channel line.
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Declining Chaikin Money Flow:
Chaikin Money Flow falls below -.20 after being above the -.20 for the previous 4 days.
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New CCI Sell Signals:
CCI crosses below -100 after being above -100 for the previous 2 days.
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Parabolic SAR Sell Signals:
Price crosses below the SAR ("Stop and reverse") line.
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Stocks in a New Downtrend (Aroon):
Aroon oscillator crossed below -50.
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Stocks in a New Downtrend (ADX):
ADX line crossed below 20.
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Gap Downs:
Today's high is less than yesterday's low.
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Breakaway Gap Downs:
A gap below a previous level of resistance.
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Runaway Gap Downs:
A gap down, typically on increased volume, during a downtrend.
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Island Tops:
Occurs when the price gaps up for one or more trading days and then gaps back down.

Candlestick Patterns

Bullish Reversal Patterns

Bullish Engulfing:
With a down trend in place, a white candle whose body fully contains the previous down day's body.
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Piercing Line:
A bullish two day reversal pattern. The first day, in a downtrend, is a long black day. The next day opens at a new low, then closes above the midpoint of the body of the first day.
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Morning Star:
A three day bullish reversal pattern consisting of three candlesticks - a long-bodied black candle extending the current downtrend, a short middle candle that gapped down on the open, and a long-bodied white candle that gapped up on the open and closed above the midpoint of the body of the first day.
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Bullish Harami:
The Bullish Harami has a long down day as part of a down trend followed by an up day whose body is fully contained within the previous day's body.
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Three White Soldiers:
A bullish reversal pattern consisting of three consecutive long white bodies. Each should open within the previous body and the close should be near the high of the day.
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Bearish Reversal Patterns

Bearish Engulfing:
A reversal pattern where a large black body fully contains the previous day's small white body.
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Dark Cloud Cover:
A bearish reversal pattern that continues the uptrend with a long white body. The next day opens at a new high then closes below the midpoint of the body of the first day.
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Evening Star:
A bearish reversal pattern that continues an uptrend with a long white body day followed by a gapped up small body day, then a down close with the close below the midpoint of the first day.
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Bearish Harami:
The first candle is a long white body as part of an uptrend and the second candle is a down day whose body is fully contained within the previous day's body.
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Three Black Crows:
A bearish reversal pattern consisting of three consecutive long black bodies where each day closes at or near its low and opens within the body of the previous day.
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Continuation Patterns

Rising Three Methods:
A bullish continuation pattern in which a long white body is followed by three small body days, each fully contained within the range of the high and low of the first day. The fifth day closes at a new high.
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Falling Three Methods:
A bearish continuation pattern. A long black body is followed by three small body days, each fully contained within the range of the high and low of the first day. The fifth day closes at a new low.
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Single-Candle Patterns

Dragonfly Doji:
A Doji where the open and close price are at, or very near, the high of the day.
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Gravestone Doji:
A doji line that develops when the Doji is at, or very near, the low of the day.
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Hammer:
Hammer candlesticks form when a security moves significantly lower after the open, but rallies to close well above the intraday low. 
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Shooting Star:
A single day pattern that can appear in an uptrend. It opens higher, trades much higher, then closes near its open.
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Filled Black Candles:
The close is less than the open and the previous day's closing value is less than or equal to the closing value for the current day.
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Hollow Red Candles:
The close is higher than the open and the previous day's closing value is more than the closing value for the current day.
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Elder Bar Patterns

Elder Bar Red:
A red bar occurs when the 13 period EMA is less than the previous 13 period EMA and the MACD Histogram is less than the previous period's MACD-Histogram.
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Elder Bar Blue:
A blue bar occurs when the 13 period EMA is less than the previous 13 period EMA and the MACD-Histogram is greater than the previous MACD-Hisogram.
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Elder Bar Green:
A green bar occurs when the 13 period EMA is greater than the previous 13 period EMA and the MACD Histogram is greater than the previous period's MACD-Histogram.
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Ichimoku Patterns

Entered Ichimoku Cloud:
The price has entered into either a red or green Ichimoku cloud.
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Above Ichimoku Cloud:
A bullish signal where the price has risen above the Ichimoku cloud.
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Below Ichimoku Cloud:
A bearish signal where the price has fallen below the Ichimoku cloud.
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Ichimoku Cloud Turned Green:
A bullish signal where the Senkou Span A line has crossed above the Senkou Span B line.
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Ichimoku Cloud Turned Red:
A bearish signal where the Senkou Span B line has crossed below the Senkou Span A line.
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P&F Patterns

Triple Top Breakout:
Prices break out after retracing from the same level two times.
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Spread Triple Top Breakout:
A spread triple top breakout is similar to a triple top breakout except that the price at which the breakout occurred is a price that the chart retraced from two times before in the recent past.
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Ascending Triple Top Breakout:
A double top followed by another double top, or three tops, each higher than the previous is recognized as an ascending triple top breakout.
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Quadruple Top Breakout:
Prices break out after retracing from the same level three times.
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Triple Bottom Breakout:
A triple bottom breakdown is similar to a double bottom breakdown except that the price at which the breakdown occurred is a price that the chart retraced from two times before.
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Spread Triple Bottom Breakout:
A spread triple bottom breakdown is similar to a triple bottom breakdown except that the price at which the breakdown occurred is a price that the chart retraced from two times before in the recent past.
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Descending Triple Bottom Breakout:
A double bottom followed by another double bottom, or three bottoms, each lower than the previous is recognized as an descending triple bottom breakdown.
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Quadruple Bottom Breakout:
A quadruple bottom breakdown is similar to a triple bottom breakdown, except that the prices break down after retracing from the same level three times.
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Bullish Signal Reversal:
This pattern is a series of rising tops and bottoms that finally soaks up all demand and the double bottom breakdown at the end signals that now supply is outstripping demand.
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Bearish Signal Reversal:
This pattern is a series of falling tops and bottoms that finally soaks up all the supply and the double top breakout at the end signals that now demand is outstripping supply.
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Bull Trap:
A bull trap is a triple top breakout followed by a reversal after only one box is made in the triple top breakout.
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Bear Trap:
A bear trap is a triple bottom breakdown followed by a reversal after only one box is made in the triple bottom breakdown.
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Bullish Catapult:
A triple top breakout followed by a double top breakout is recognized as a bullish catapult breakout.
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Bearish Catapult:
A triple bottom breakdown followed by a double bottom breakdown is recognized as a bearish catapult breakdown.
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Bullish Triangle:
A double top breakout after the rising bottoms and the falling tops that form the triangle.
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Bearish Triangle:
A double top breakdown after the rising bottoms and the falling tops that form the triangle.
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Long Tail Down:
This pattern is recognized when the prices drop 20 boxes or more.
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High Pole:
The high pole warning is given when a chart rises above a previous high by at least 3 boxes but then reverses to give back at least 50 percent of the rise.
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Low Pole:
The low pole reversal is seen when a chart falls below a previous low by at least 3 boxes but then reverses to rise by at least 50 percent of the fall.
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