The Basketball Rookies index is up 7.11% over this period, -2.61% in the last 7 days against -7.46% over 30. It sits 8.04% below the period high (101 on Sep 13) and 10.23% above the period low (Dec 6).
Gains for the period are intact but the latest week is soft — a pause rather than a reversal unless the low gives way.
Arithmetic over the index level series (7/30-day change, daily volatility, drawdown, distance from the period high and low). Not investment advice.
1984 Michael Jordan PSA 9Star · $239,573+287.87%
2019 Stephen Curry [Reactive Blue] PSA 10Panini Mosaic · $54+286.22%
2022 Paolo Banchero PSA 10Panini Mosaic · $40+281.46%
2003 Lebron James PSA 10Upper Deck LeBron James Box Set · $202+279.70%
1986 1985 All Star PSA 9Star Michael Jordan · $6,662+278.52%
1998 Vince Carter PSA 10Ultra · $898+278.19%
2020 LaMelo Ball PSA 10Panini Prizm · $59-72.90%
2022 Jalen Duren PSA 10Panini Prizm · $160-71.38%
2021 Franz Wagner PSA 10Panini Prizm · $195-70.76%
2021 Jalen Green PSA 10Panini Prizm · $88-70.70%
1996 Stephon Marbury [Refractor] PSA 10Bowman's Best · $480-70.66%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 4,490 most-traded cards in this basket; the recent window covers all 44,395 tracked cards. Not investment advice.
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