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.
96.5%
of the most-traded cards covered
by dollars traded · 98.1% in the big four
1,060,299
cards priced by grade
1,565,273 graded cards catalogued · new sales added every night
$28.1B+
of graded cards tracked
63.6M graded slabs across 104,604 cards · price × graded population
English and Japanese cards are separate catalogue entries with their own sales, so they get separate indexes. Eras: Vintage 1996–2003, Modern 2004–2019, Ultra Modern 2020 on. Same math as every index above.
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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Track your own cards against the market — live values, a 0–1000 protection score, and a broker-ready insurance schedule. Free.
