Proprietary market data · updated daily
The MostExpensiveWatches Price Index
A repeat-listing index for the ultra-luxury watch market — we track the same individual reference listings across merchants over time, so inventory churn can never distort the figure. This is our first-party time-series, distinct from historical auction comps.
Across 12,747 matched listings from 2026-05-30 to 2026-08-21, the repeat-listing price index rose by 0.004%, led by gains in A. Lange & Söhne at +0.15% and offset by declines led by Jaeger-LeCoultre at -0.12%.
By brand — latest mean change
| Brand | Index | Mean change | Median change | Matched sample |
|---|---|---|---|---|
| A. Lange & Söhne | 100.1 | +0.15% | +0.00% | 137 |
| Patek Philippe | 100.0 | +0.01% | +0.00% | 733 |
| Tudor | 100.0 | +0.01% | +0.00% | 376 |
| IWC | 100.0 | +0.00% | +0.00% | 138 |
| Breitling | 100.0 | +0.00% | +0.00% | 656 |
| OMEGA | 100.0 | -0.01% | +0.00% | 1498 |
| Rolex | 100.0 | -0.01% | +0.00% | 2883 |
| Grand Seiko | 100.0 | -0.03% | +0.00% | 272 |
| Cartier | 99.9 | -0.06% | +0.00% | 525 |
| Vacheron Constantin | 99.9 | -0.07% | +0.00% | 358 |
| Audemars Piguet | 99.9 | -0.08% | +0.00% | 219 |
| Jaeger-LeCoultre | 99.9 | -0.12% | +0.00% | 176 |
Methodology
Repeat-listing index. Baseline = first captured day (index 100). Each day tracks the mean price change of the same individual reference listings observed on both the baseline day and that day, so inventory churn cannot move the index. Source: MostExpensiveWatches daily cross-merchant price capture.
The machine-readable version of this index (schema.org Dataset) is published at
/data/watch-price-index.json under a CC-BY 4.0 licence.
When citing, credit “MostExpensiveWatches Price Index”.
See also the Grail Index — our record of the $1M+ auction segment that broad-market indices exclude — the daily Watch of the Day, and the Weekly Market Brief.
Last compiled: 2026-08-21T07:38:04.112320+00:00