Trend Filter

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Trend filter for signals

Filter signal lists using trends, moving averages and market data. The idea is to keep only entries aligned with market direction, which organizes your analysis better.

When to use it

The trend filter keeps only the entries that follow the market direction. It uses trends and moving averages to help organize your analysis before testing.

In practice, the trend filter helps keep your list consistent with the state of the market. If the strategy is to trade with the move, it makes sense to remove entries that go against it. Run the backtest with and without the filter and compare: if the result improves consistently, the criterion is helping; if it does not change, the filter may only be shrinking the list without real gain.

How to use

  1. Paste the signal list.
  2. Choose the trend criteria.
  3. Test the filtered list and compare it with the original.

Best practices

  • Decide which trend criterion you consider valid and keep it constant across tests.
  • Compare the list before and after the filter in the backtest.
  • Avoid too many filters, which can leave the list small.
  • Use the result together with the trend tracker to follow market changes.

Common mistakes

  • Assuming that trading with the trend removes risk.
  • Changing the trend criterion on every test, which prevents comparison.
  • Applying the filter to lists built to trade reversals.

Frequently asked questions

Is trading with the trend better?
It usually reduces entries against the flow, but no rule removes risk. Validate with data.
What are moving averages?
Averages of price over a period that smooth movement and help show direction.
SIO | Signal Trend Filter