Cumulative % Change & Inflation-Adjusted (Auto CPI by Currency)

This indicator tracks an asset’s cumulative performance from a user-defined start date (T0) and compares nominal returns with inflation-adjusted (“real”) returns, automatically selecting the appropriate CPI series based on the asset currency (USD or EUR).

What it shows

Nominal cumulative return (%) from T0, based on the selected price series.

Inflation change (%) from T0, using a monthly CPI index:

USD assets: US CPI (FRED CPIAUCSL)

EUR assets: Euro Area CPI (TradingView Economics EUCPI)

Real cumulative return (%) from T0, i.e., nominal return deflated by cumulative CPI.

Key inputs

T0 (start date): Year / month / day used as the reference point.

Asset currency (USD/EUR): Drives automatic CPI selection.

Initial capital: Starting value expressed in the asset’s currency; used to display current nominal and real (inflation-adjusted) portfolio value.

Performance ticker (optional): Lets you compute performance using a different symbol than the chart (e.g., a total-return series or an accumulating ETF). If left empty, the script uses the chart’s symbol.

Outputs

Plots

Nominal cumulative % change

Real (inflation-adjusted) cumulative % change

CPI % change

Summary table

Nominal return %

Real return %

CPI change %

Reference date (T0)

Initial value

Current nominal value

Current inflation-adjusted value

Performance ticker used

Notes

CPI is monthly, so the inflation line updates in steps.

If you use a price series that does not include dividends (standard “close”), nominal/real returns may underestimate total return for dividend-paying assets.