The Ty Cobb index is down 12.39% over this period, -0.97% in the last 7 days against -12.39% over 30. It sits 14.15% below the period high (105 on Sep 20) and 0.01% above the period low (Oct 7).
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.
2021 Ty Cobb PSA 10Topps Museum Collection · $65+116.74%
1933 Ty Cobb PSA 1R338 Sport Kings · $1,733+55.92%
1933 Ty Cobb PSA 2R338 Sport Kings · $1,733+55.92%
1933 Ty Cobb PSA 5R338 Sport Kings · $1,733+55.92%1933 Ty Cobb SGC 2R338 Sport Kings · $1,733+55.92%1933 Ty Cobb SGC 3R338 Sport Kings · $1,733+55.92%
1933 Ty Cobb PSA 5Sport Kings Gum · $1,733+55.92%1933 Ty Cobb SGC 4Sport Kings Gum · $1,733+55.92%
1960 Ty Cobb PSA 10Fleer · $4,093-22.58%2022 Ty Cobb PSA 10Panini Diamond Kings · $30-8.93%
2021 Ty Cobb PSA 10Topps Gypsy Queen · $35-4.65%2022 Ty Cobb PSA 10Topps Triple Threads · $37-4.08%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 36 most-traded cards in this basket; the recent window covers all 268 tracked cards. Not investment advice.
Track them against this index — live values, a 0–1000 protection score, and a broker-ready insurance schedule. Free.