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Player index · Updated 2026-10-11

Ken Griffey Jr. card market index

115.191W -2.12% · 1M -2.67%
115.19−19.03 (-14.2%)Hover or touch for any day
110.00120.00130.00140.009/129/199/2710/410/11start
Market analysis · last 1M
computed from Slabline's own index series · updated 2026-10-11
Current
115.19
Period change
-14.18%
Period high
136.88
Period low
115.19
Overview

The Ken Griffey Jr. index is down 14.18% over this period, -4.83% in the last 7 days against -14.17% over 30. It sits 15.85% below the period high (137 on Sep 15) and 0.00% above the period low (Oct 11).

Key insights
  1. 1Both the 7-day (-4.83%) and 30-day (-14.17%) moves are negative — sellers have had the upper hand.
  2. 2Day-to-day volatility is moderate at 1.39% a day, though the deepest pullback in the window was -15.8%.
  3. 3Sitting within 0.00% of the period low — buyers have not yet stepped in.
Outlook

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.

Starting level (29d ago)
134.22
Current level
115.19
Change over 29 days
-14.18%
1M low
115.19
1M high
136.88
Cards tracked
1,828
Tracked value
$678,076
Breadth (1W)
139↑ 122↓ 1,202→

Top gainers1M

1998 Ken Griffey Jr. PSA 10Upper Deck · $580+253.63%1999 Ken Griffey Jr. PSA 10Topps Finest · $750+248.84%1995 Ken Griffey Jr. PSA 10Topps Finest · $252+223.08%2001 Ken Griffey Jr. PSA 10Bowman's Best · $140+220.22%1995 Ken Griffey Jr. PSA 10Stadium Club Clear Cut · $1,264+216.09%1995 Ken Griffey Jr. PSA 10Topps Stadium Club · $1,264+216.09%1999 Ken Griffey Jr. PSA 10SPx · $1,823+214.31%1999 Ken Griffey Jr. PSA 10UD Ionix · $215+211.04%1997 Ken Griffey Jr. PSA 10Bowman's Best · $240+203.80%1994 Ken Griffey Jr. PSA 10Topps Stadium Club · $425+189.59%

Top decliners1M

1988 Ken Griffey Jr. PSA 10San Bernardino Spirit · $184-73.44%1998 Ken Griffey Jr. PSA 10Topps Chrome · $100-73.33%1993 Ken Griffey Jr. PSA 10Bowman · $38-72.86%1997 Ken Griffey Jr. PSA 10Pinnacle Certified · $50-72.19%1995 Ken Griffey Jr. PSA 10Pinnacle · $50-70.15%1996 Ken Griffey Jr. PSA 10Flair · $700-69.84%1999 Ken Griffey Jr. PSA 10SP Signature Edition · $1,401-68.82%1998 Ken Griffey Jr. PSA 10Upper Deck · $58-64.63%2003 Ken Griffey Jr. PSA 10Topps Finest · $90-63.86%1998 Ken Griffey Jr. PSA 10Fleer Tradition · $40-60.98%

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 447 most-traded cards in this basket; the recent window covers all 1,828 tracked cards. Not investment advice.

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