The Backtest feature allows investors and traders to evaluate whether a specific strategy would have been effective by simulating its performance using historical data. This helps assess a stock's historical performance and estimate potential returns based on the strategy over time.

For a quick understanding of a backtest, refer to this link, which provides an overview of one of the screener's backtest results: 
https://trendlyne.com/fundamentals/back-test/runhistory/overview/389040/.

Additionally, a calculation sheet is available with details on active stocks, entry/exit prices, percentage changes, weightage, and NAV performance across all rebalancing periods during the backtest. Subscribers can access this sheet for all backtests.