Slabline^™All cards →

How each category moved — the value-weighted change across every graded card we observed in it, the way a market-cap stock index works. Built from Slabline's own value series, refreshed daily.

Rookie indexes

Debut-year cards only — each player's first catalog year, the rookie market isolated from the reprint tail. Same math as every index above.

Players & characters

The market for one name — every tracked graded card of that player or character, value-weighted. Smaller baskets than the category indexes; sizes shown per row.

Methodology: for each category, the value-weighted percentage change across all graded cards with an observed value both now and at the horizon (1W, 1M) — the sum of current values against the sum of prior values, with each card's move capped so a single outlier can't dominate. Basket sizes shown per row. Values come from real comparable sales resolved on Slabline card pages; sparse cards are excluded rather than interpolated. Not investment advice.

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