The Jackie Robinson index is down 2.59% over this period, +3.94% in the last 7 days against -2.65% over 30. It sits 6.01% below the period high (91 on Sep 18) and 6.92% above the period low (Oct 9).
The period is negative but the last week has turned up — early signs of a floor.
Arithmetic over the index level series (7/30-day change, daily volatility, drawdown, distance from the period high and low). Not investment advice.
1953 Jackie Robinson PSA 2.5Topps · $2,425+174.01%
2024 Jackie Robinson PSA 10Donruss · $85+147.06%
1954 Jackie Robinson PSA 2Topps · $700+121.71%
1948 Jackie Robinson PSA 3.5Leaf · $22,300+104.05%
1948 Jackie Robinson PSA 3Leaf · $19,600+79.34%
1949 Jackie Robinson PSA 10Eureka Sportstamps · $431-68.07%2015 Jackie Robinson PSA 10Topps Gallery of Greats · $60-51.24%
1991 Jackie Robinson PSA 10Topps Archives 1953 · $133-46.47%
1976 Jackie Robinson PSA 10Laughlin Diamond Jubilee · $86-24.34%
1952 Jackie Robinson PSA 3.5Topps · $23,051-23.16%1950 Jackie Robinson PSA 4.5Bowman · $1,063-22.81%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 111 most-traded cards in this basket; the recent window covers all 282 tracked cards. Not investment advice.
Track them against this index — live values, a 0–1000 protection score, and a broker-ready insurance schedule. Free.