QuantConnect Lean Cleans Up Financial Statement Data Properties

Open-source algorithmic trading engine QuantConnect Lean has improved its financial statement data structure. Judging the match quality for 'OtherNonCashItems'

QuantConnect Lean — C#/Python Backtest·Live Engine · Release 18068: Drop OtherNonCashItemsValue, the old property takes the code · 2026-09-09

Open-source algorithmic trading engine QuantConnect Lean has improved its financial statement data structure. Judging the match quality for 'OtherNonCashItems' from the Morningstar data source as poor, it decided to remove the duplicate property 'OtherNonCashItemsValue' and keep only the existing property. This is a measure to increase data consistency and provide actual data instead of empty values.

weltiq perspective: Users backtesting fundamental data-based strategies may need to modify their code due to financial statement property changes, and can obtain more reliable results from the improved data quality.

Release Note Excerpt

Morningstar marks EQ1FM a poor match for OtherNonCashItems; the decision is to keep the existing property fed rather than empty, so the twin goes. Co-Authored-By: Claude Fable 5.1 noreply@anthropic.com

Source: https://github.com/QuantConnect/Lean/releases/tag/18068