Stochastic Oscillator (stoch)

[[stoch]] shows where the current close sits inside the recent range defined by highs and lows. It helps you read market pace when price moves toward the edges of its calculation window.

The block exposes two numeric series on a 0 to 100 scale. %K is the main oscillator line. %D is a simple moving average of %K, which smooths the reading.

Overbought and oversold zones are not fixed. You define these thresholds in your strategy, then explore them with grid search. The 80 and 20 levels are common starting references, but they remain parameters you can tune to your own logic.

Block declaration#

A strategy can contain multiple [[stoch]] blocks. Each block outputs two numeric series, %K and %D.

The [[stoch]] block does not accept a source key and always uses the standard high, low, and close price series.

Examples#

Minimal setup#

[[stoch]]
k_id = "stoch_k"
d_id = "stoch_d"
# k_length = 14
# d_length = 3

Custom fixed lengths#

This block uses custom k_length and d_length values.

[[stoch]]
k_id     = "stoch_k"
d_id     = "stoch_d"
k_length = 12
d_length = 4

Search for the optimal lengths#

This block explores the possible combinations of k_length and d_length to identify the best-performing configuration.

[[stoch]]
k_id           = "stoch_k"
d_id           = "stoch_d"
k_length.start = 10
k_length.stop  = 20
d_length.start = 2
d_length.stop  = 6

Searching overbought and oversold zones#

This example combines [[stoch]] with two [[constant]] blocks to optimize overbought and oversold thresholds. The oversold < overbought constraint keeps combinations consistent, and the conditions use both %K and %D to reduce noise.

[[constant]]
id    = "overbought"
start = 70
stop  = 90
step  = 5

[[constant]]
id    = "oversold"
start = 10
stop  = 30
step  = 5

[[stoch]]
k_id = "stoch_k"
d_id = "stoch_d"
# k_length = 14
# d_length = 3

[constraints]
condition = "oversold < overbought"

[[condition]]
id            = "stoch_overbought"
condition     = "stoch_k > overbought and stoch_d > overbought"
next_block_id = "..."

[[condition]]
id            = "stoch_oversold"
condition     = "stoch_k < oversold and stoch_d < oversold"
next_block_id = "..."

Parameters#

The source key is not accepted by the [[stoch]] block.
The oscillator always relies on the high, low, and close series of the selected market and timeframe.

Available variables#

The stoch block exposes two numeric series (%K and %D), the lengths used in the calculation, and the symbol and timeframe context.

Assume the block is configured as:

[[stoch]]
k_id = "stoch_k"
d_id = "stoch_d"

Then:

Notes:

• Numeric variables combine freely in expressions (arithmetic, comparisons, and logical operators).
• Text variables are strings intended for equality and inequality checks.