Explained on 26 October 2026. This is an educational answer drawn from the dated article below; examples are hypothetical unless a specific source observation is identified.
How it works
To estimate performance, one would need security returns, cash flows, rebalancing, costs and the relevant methodology. Allocation changes can affect sensitivities, but the direction and size need more inputs. The October notice supplies specific membership and weight changes, not all the data required for a priced return projection.
A simple example
The selected Nifty Ultra Short Duration Debt Index A-I rows total 100.00% before the review and 99.99% after it using the published two-decimal weights. Keep that 0.01 percentage-point rounding residual visible rather than changing a component to force 100%. Its three-month CD weight becomes 43.62%. That does not promise a 43.62% yield, income contribution or annual investor return.
What to check
- Identify whether the column measures allocation or performance.
- Check that selected or complete rows are labelled.
- Require actual return inputs before projecting outcomes.
Read the full event and evidence
Nifty’s 30 October Debt Rebalance: A Fund Category Can Stay the Same While Its Benchmark Mix Changes explains the original event, its dates and the supporting documents. Event context: 23 October notice; effective 30 October 2026.