Triple Exponential Moving Average (TRIX)
Calculate the Trix (Triple Exponential Moving Average) for a given price series.
Trix is a momentum oscillator that calculates the percentage rate of change of a triple exponentially smoothed moving average. It helps identify overbought and oversold conditions in a market.
The formula is as follows:
\[\text{EMA1} = \operatorname{EMA}(\text{Close},\; \text{Window})\] \[\text{EMA2} = \operatorname{EMA}(\text{EMA1},\; \text{Window})\] \[\text{EMA3} = \operatorname{EMA}(\text{EMA2},\; \text{Window})\] \[\text{TRIX} = 100 \cdot ((\text{EMA3} - \text{EMA3} \left[- 1\right]) / \text{EMA3} \left[- 1\right])\]Also known as: triple smoothed EMA, rate of change oscillator.
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Calculate the Triple Exponential Moving Average (TRIX) in Python
The Triple Exponential Moving Average (TRIX) is available in the Technicals module of the open-source Finance Toolkit. Install it with:
pip install financetoolkit -U
Then call get_trix as shown below.
from financetoolkit import Toolkit
toolkit = Toolkit(tickers=["AAPL", "MSFT"])
toolkit.technicals.get_trix()
Which returns:
| Date | AAPL | MSFT | Benchmark |
|---|---|---|---|
| 2026-06-18 | 0.1364 | -0.1466 | 0.0936 |
| 2026-06-22 | 0.1102 | -0.1998 | 0.0849 |
| 2026-06-23 | 0.0852 | -0.2492 | 0.0734 |
| 2026-06-24 | 0.061 | -0.2982 | 0.0603 |
| 2026-06-25 | 0.0242 | -0.3513 | 0.0471 |
| 2026-06-26 | -0.0123 | -0.3924 | 0.0325 |
| 2026-06-29 | -0.0485 | -0.4254 | 0.0216 |
| 2026-06-30 | -0.0765 | -0.4481 | 0.0154 |
| 2026-07-01 | -0.0937 | -0.4554 | 0.0122 |
| 2026-07-02 | -0.0914 | -0.4477 | 0.0107 |
Parameters
get_trix accepts the following parameters:
- period (str, optional): The time period to consider for historical data. Can be “daily”, “weekly”, “quarterly”, or “yearly”. Defaults to “daily”.
- close_column (str, optional): The column name for closing prices in the historical data. Defaults to “Adj Close”.
- window (int, optional): Number of periods for moving average calculation. The number of periods (time intervals) over which to calculate the moving average.
- rounding (int | None, optional): The number of decimals to round the results to. Defaults to 4.
- growth (bool, optional): Whether to calculate the growth of the Trix. Defaults to False.
- lag (int | list[int], optional): The lag to use for the growth calculation.
- standardize (bool, optional): Whether to standardize (Z-Score) the result. When combined with growth=True, standardizes the growth values instead of the raw values. Defaults to False. Defaults to 1.
Related Overlap Indicators
The Technicals module page introduces the module, and the sidebar lists all of its functions.