Slabline™
Graded-card protection score
Slabline™The Multi-Sport index is down 6.15% over this period, -0.26% in the last 7 days against -0.74% over 30. It sits 10.62% below the period high (110 on Sep 19) and 0.06% above the period low (Oct 29).
Downtrend in place; until the 7-day move turns positive, expect the low to be retested.
Arithmetic over the index level series (7/30-day change, daily volatility, drawdown, distance from the period high and low). Not investment advice.
Value-weighted index, base 100 at the window start: the sum of the basket's observed values against the prior day's, chained daily, each card's move capped so one outlier can't dominate. Values come from real comparable sales resolved on Slabline card pages. The window deepens automatically as history accumulates. Long-run history reflects the 32 most-traded cards in this basket; the recent window covers all 132 tracked cards. Not investment advice.
Track them against this index — live values, a 0–1000 protection score, and a broker-ready insurance schedule. Free.
