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SSL Channel

Two simple averages, of the highs and of the lows, whose lines swap roles when the close breaks out of them. How AlgoLift computes the SSL Channel.

IndicatorBy AlgoLiftUpdated 3 min read
On this page 11What it measuresFormulaInputs in AlgoLiftOutputs in AlgoLiftHow to read itBest in, worst inThree setups1. Trade the flips2. Direction as a trend gate3. The down line as a stopCommon mistakes

TL;DR. A simple average of the highs and one of the lows form a channel. The trend turns up when the close finishes above the average of highs and down when it finishes below the average of lows, and holds in between. The two lines swap roles with the trend, so they cross exactly when it flips.

What it measures

  • A trend that needs a real break to turn. A close inside the channel changes nothing; only a close beyond one of the averages turns the trend.
  • The channel's width. The distance between the averages of highs and lows is the typical bar range over the period.
  • Each flip. The signal output marks the bar the trend turns.

Formula

Inputs in AlgoLift

SettingDefaultRangeNotes
Period101 to 500Bars in both simple averages. At 1 the averages are the bar's own high and low, which a close can never break, so the channel stays empty.

Outputs in AlgoLift

HandleTypePlottedNotes
Up LineNumericAlwaysThe average of highs in an uptrend, the average of lows in a downtrend; empty before the first break.
Down LineNumericAlwaysThe other average; empty before the first break.
DirectionNumericOn select1 after a close above the average of highs, -1 after a close below the average of lows, 0 before the first.
SignalNumericAlways+1 when the trend flips up, -1 when it flips down, 0 elsewhere. Drawn as markers on the chart. The first trend taken is not a signal.

How to read it

  • Up line above the down line: the trend is up; the down line (the average of lows) is the level a close must break to turn it.
  • The lines cross: the trend flipped on this bar. The signal output reads +1 or -1.
  • A narrow channel: quiet bars; a small move can flip the trend.
  • A wide channel: volatile bars; the trend needs a large move to turn, so it holds through pullbacks.
Common Misconception
Myth
The SSL Channel is a crossover of two moving averages.
Reality
The lines cross because they swap roles at a flip, not because one average overtook another. The averages of highs and lows never cross each other; the trend turns on a close beyond one of them.

Best in, worst in

Best in markets with steady trends and pullbacks that stay inside the channel.

Worst in wide, choppy ranges where the close breaks the channel on both sides in turn. A longer period or a filter such as the ADX/DMI reduces those whipsaws.

Three setups

1. Trade the flips

Wire Signal into a Comparison greater than 0 for the long Entry and less than 0 for the short.

2. Direction as a trend gate

Compare Direction equal to 1 and AND it into a pullback entry: buy dips while the SSL trend is up.

3. The down line as a stop

In a long, exit through Set Exit Condition when the close falls below Down Line; that close is also the bar the trend flips.

Common mistakes

  • Expecting a line from the first bars. Both lines wait for the first break, which can come well after the period.
  • Using a period of 1. The close never leaves its own bar's range, so nothing is ever drawn.
  • Reading Direction as an event. It holds for many bars; use Signal or a Crossover for one trade per turn.
Key Takeaway

The SSL Channel turns only on a close beyond the average of highs or lows, and its two lines swap roles at each flip.

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