The Baseball index is up 7.42% over this period, -1.32% in the last 7 days against -7.06% over 30. It sits 7.58% below the period high (97 on Sep 13) and 10.27% above the period low (Nov 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.
1985 Nolan Ryan PSA 10Topps Tiffany · $2,246+299.15%
2018 Shohei Ohtani PSA 10Topps Chrome Update · $950+298.15%
2018 Shohei Ohtani PSA 10Topps Now · $443+297.64%
2025 Shohei Ohtani PSA 10Bowman Anime · $8,804+296.49%
1990 Larry Walker PSA 10Bowman Tiffany · $70-73.79%
2024 Trey Yesavage PSA 10Bowman Draft Chrome Prospect Autograph · $276-73.67%
2022 Shohei Ohtani PSA 10Stadium Club Chrome Beam Team · $220-73.42%
2013 Aaron Judge PSA 10Bowman Chrome Draft Picks & Prospects · $305-73.34%2022 James Wood PSA 10Bowman Chrome Sapphire Autographs · $285-73.28%
1987 Barry Larkin PSA 10Topps · $51-73.26%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 23,455 most-traded cards in this basket; the recent window covers all 240,888 tracked cards. Not investment advice.
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