The Michael Jordan index is flat 0.49% over this period, +1.24% in the last 7 days against +0.70% over 30. It sits 5.63% below the period high (275 on Oct 6) and 1.32% above the period low (Oct 3).
Range-bound: no clear direction over this period — moves in the underlying rookie and grade baskets matter more than the index.
Arithmetic over the index level series (7/30-day change, daily volatility, drawdown, distance from the period high and low). Not investment advice.
1997 Michael Jordan PSA 10Ultra · $2,150+294.68%
1999 Michael Jordan PSA 9Upper Deck Black Diamond Jordan Diamond Gallery · $150+292.16%
1995 Michael Jordan PSA 10Flair Anticipation · $8,400+281.99%
1997 Michael Jordan PSA 10Upper Deck Slam Dunk · $899+279.94%
1997 Michael Jordan PSA 10Upper Deck · $598+277.65%
1998 Michael Jordan PSA 10Upper Deck Ionix · $40-74.32%
1998 Michael Jordan PSA 10Upper Deck Ionix · $50-73.93%1999 Michael Jordan PSA 9Upper Deck Ultimate Victory · $67-73.08%
1993 Michael Jordan PSA 10Stadium Club · $967-72.92%
1994 Michael Jordan PSA 10Upper Deck · $30-72.73%
2009 Michael Jordan PSA 10Upper Deck Jordan Legacy · $30-72.72%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 1,143 most-traded cards in this basket; the recent window covers all 2,187 tracked cards. Not investment advice.
Track them against this index — live values, a 0–1000 protection score, and a broker-ready insurance schedule. Free.