Paris home growth vs SPY
Across the full published history, the Paris implied 60 m² old apartment value rose 140.6%, while SPY share price converted to EUR rose 573.9%. The chart recalculates its indexed readings from the selected range’s first shared observation.
- Implied 60 m² old-apartment value at the published Paris price per square metre
- Paris municipality
- quarterly
- Indexed to 100
- Home growth
- +140.6%
- 2003-12 to 2025-12
- SPY growth
- +573.9%
- Selected range
- Growth gap
- -433.3 pp
- Home minus asset
- Frequency
- quarterly
- Aligned observations
In the selected Max range, Paris implied 60 m² old apartment value changed +140.6%, SPY share price converted to EUR changed +573.9%, and the home-minus-asset gap was -433.3 pp.
| Series | First | Latest | Min | Max |
|---|---|---|---|---|
| Paris implied 60 m² old apartment value | 100.0 | 240.6 | 100.0 | 270.4 |
| SPY share price converted to EUR | 100.0 | 673.9 | 71.9 | 673.9 |
How this is calculated
Series value ÷ first available value in selected range × 100Each line starts at 100 using the first shared observation available in the selected range. A reading of 150 means that series has risen 50% since that period.
Housing value as published for the calendar quarter; asset and FX prices are arithmetic means of their available daily closes in the same calendar quarter.
What the comparison shows
The indexed lines compare percentage growth, not price levels. A widening gap means one series has grown faster since the selected range began; it does not mean the two assets have the same value or risk.
Frequently asked questions
12 answersHow is Paris home growth compared with SPY?
The aligned home-value and SPY price series are each divided by their first shared observation in the selected range and multiplied by 100.
Why do both lines begin at 100?
A common starting index removes the difference in original price levels. A reading of 150 means that series has grown 50% since the selected range began.
What does the percentage-point gap show?
It is Paris home growth minus SPY growth over the selected range. A negative gap means SPY grew faster.
Is this a total-return comparison?
No. The chart compares the published home-value measure with the asset price. It excludes dividends, rental income, transaction costs, financing, maintenance, and taxes.
Where do the Paris housing and SPY data come from?
Notaires du Grand Paris / Notaires–INSEE supplies the housing series for Paris municipality. The SPY series uses SPY from the asset source linked beside the chart. Both are aligned to the page’s quarterly frequency.
How many observations are included?
89 aligned observations are shown from 2003-12-31 through 2025-12-31. All are marked complete.
Can the latest growth reading change after publication?
Yes. Refresh the full official table. Île-de-France quarters receive a provisional and then final publication; methodology revisions may update history. The page was derived from housing data fetched on 2026-08-23, and later source revisions can change the indexed path and growth gap.
Does a wider growth gap imply causation?
No. The gap describes the difference between Paris home growth and SPY price growth over the selected range. It does not show that either series caused the other or predict what happens next.
How sensitive is the growth gap to the selected start date?
The gap can be highly sensitive to the base period because both series reset to 100 at the range’s first shared observation. The 1Y, 5Y, 10Y, and Max views answer different historical questions and should be labelled with their chosen window.
Is the growth gap a measure of statistical significance?
No. It is an arithmetic difference between two indexed growth rates. The page does not estimate confidence intervals, volatility-adjusted performance, correlation, or statistical significance.
How do currency moves affect SPY growth?
SPY is converted from USD into EUR for each aligned observation. Its local-currency growth therefore includes both the asset-price move and the exchange-rate move.
How should I cite this observation?
Cite the PIER20 page and access date, then identify Notaires du Grand Paris / Notaires–INSEE as the housing source and SPY as the asset series. State that the comparison runs through 2025-12-31 and uses quarterly aligned observations.