The CYKI 100
100 sneakers, priced daily from resale market data, rebased to 100 at launch. This page updates from the same live data every time it is rebuilt — nothing here is typed by hand.
132 consecutive daily readings since 27 June 2026, no gaps, about eighteen weeks of history. That is real, unbroken data, but it is not a long track record yet. We will keep saying so for as long as it is true, and we will not show you a timeframe — a year, an "all-time" line — the data does not actually cover.
Brand Indices
Five more indexes, tracked the same way, each with its own, more recent start date.
Nike, Jordan, adidas, New Balance and ASICS are trademarks of their respective owners. These indexes are independent market trackers built by CYKI and are not affiliated with, endorsed by, or sponsored by these brands.
Download the CYKI 100 chart for Instagram, TikTok or anywhere else that isn't a browser tab — same chart as above, cropped to fit.
No app needed: fill in the blank Rate My Rack template by hand instead.
Cohorts
The same index, cut by category. Each cohort is chained from 100 at the same base, using the identical method as the headline number, so a category can be read on its own, not just as a share of one average.
| Cohort | Level | Since base |
|---|---|---|
| Nike Dunk | 178.49 | +78.5% |
| ASICS | 135.42 | +35.4% |
| Converse | 133.50 | +33.5% |
| Jordan 4 | 109.94 | +9.9% |
| Collabs | 107.89 | +7.9% |
| Jordan 5 | 106.96 | +7.0% |
| Yeezy | 103.78 | +3.8% |
| Jordan 3 | 102.56 | +2.6% |
| Salomon | 99.87 | −0.1% |
| Jordan 1 | 99.36 | −0.6% |
| Other Nike | 98.14 | −1.9% |
These eleven cohorts cover the index's main categories. A category with too few shoes to behave like a group is left out rather than shown as a cohort of its own.
The 100 individual sneakers in the index are not published here. Cohort labels and their performance are; the constituent list and per-cohort counts are not. That is a deliberate call, not an oversight.
New to this: two short films on what a sneaker market index actually is and reading your collection against a benchmark.
The full daily series — every reading since the 27 June 2026 base, as a CSV — is published in the press kit, alongside the chart as a downloadable image. Plot it yourself and check our arithmetic.
Chart shown through 5 November 2026 (last full page render). The level, since-base %, and cohort table above refresh live in your browser from the same feed when it's reachable — the chart won't move until the next render.