kernc / kernc/backtesting.py

MultiBacktest - why no stats returned?

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enhancement
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Description

### Discussed in https://github.com/kernc/backtesting.py/discussions/1307

Originally posted by **acud** September 11, 2025
I just tried the `MultiBacktest` and saw that it only returns the heatmaps, but not the stats. I wonder, since it wraps the optimize function, why not return the stats for every symbol too? It is a bit difficult to see what are the optimization results without seeing all the relevant data coming out of the stats too. Any particular reason why those weren't included?

> the function fingerprint could be more like `Backtest`, with `best_stats` and then `heatmaps` conditionally returned. 👍

Contributor guide

Open the contributing guide

Research direction

Start by reading the MultiBacktest implementation and its wrapping of optimize, then compare its return handling with Backtest. Determine how stats for each symbol should accompany the existing heatmaps, and verify the public result exposes the relevant optimization data.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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