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Beta Release: JK Index is in active development. Data coverage is expanding and you may see gaps or inconsistencies as we iterate. Feedback is welcome.
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Mission

JK Index exists to make TCG markets clearer, more transparent, and more useful for collectors.

Updated 2026-06-03

JK Index exists to make TCG markets clearer, more transparent, and more useful for collectors.

The market already exists in pieces. JK Index is building the layer that makes it legible.

Mission pillars

  • Collect the data.
  • Separate the signals.
  • Build market memory.
  • Give collectors better context.
  • Turn collector behavior into useful product surfaces.
  • Build the rails before scaling the market.

Collector-first infrastructure

Collector-first does not mean collector-only. Shops, sellers, graders, creators, and builders all need clearer market context. But collectors are the reason the market has life in the first place.

The product should respect that. It should make the market easier to read without stripping out the judgment, risk, and taste that make collecting real.