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Player index · Updated 2026-10-11

Sandy Koufax card market index

103.881W -1.62% · 1M -7.97%
103.88−11.60 (-10.0%)Hover or touch for any day
100.00105.00110.00120.009/129/199/2710/410/11start
Market analysis · last 1M
computed from Slabline's own index series · updated 2026-10-11
Current
103.88
Period change
-10.05%
Period high
116.32
Period low
103.88
Overview

The Sandy Koufax index is down 10.05% over this period, -3.96% in the last 7 days against -10.03% over 30. It sits 10.69% below the period high (116 on Sep 22) and 0.00% above the period low (Oct 11).

Key insights
  1. 1Both the 7-day (-3.96%) and 30-day (-10.03%) moves are negative — sellers have had the upper hand.
  2. 2Day-to-day volatility is moderate at 1.25% a day, though the deepest pullback in the window was -10.7%.
  3. 35 consecutive down days — the longest run in view; the sharpest day was -4.43% on Sep 30.
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)
115.48
Current level
103.88
Change over 29 days
-10.05%
1M low
103.88
1M high
116.32
Cards tracked
215
Tracked value
$1,231,130
Breadth (1W)
44↑ 31↓ 140→

Top gainers1M

1962 Sandy Koufax SGC 5Topps · $217+262.20%2012 Sandy Koufax PSA 10Topps Heritage Baseball Flashbacks · $120+242.96%1963 Sandy Koufax SGC 5Topps · $190+210.88%1955 Sandy Koufax PSA 4.5Topps · $2,750+198.10%1955 Sandy Koufax SGC 4.5Topps · $2,467+167.43%1955 Sandy Koufax PSA 7.5Topps · $20,861+132.38%1955 Sandy Koufax SGC 4Topps · $2,100+127.64%1959 Sandy Koufax PSA 6Topps · $153+119.84%1960 Sandy Koufax PSA 6Topps · $270+116.90%1960 Sandy Koufax PSA 8Topps · $1,111+112.43%

Top decliners1M

1958 Sandy Koufax PSA 7Topps · $234-73.77%1963 Sandy Koufax PSA 3M118 Baseball Magazine · $119-61.53%1955 Sandy Koufax SGC 7.5Topps · $3,492-61.10%1958 Sandy Koufax PSA 10Topps · $21,763-52.47%1960 Sandy Koufax SGC 5Topps · $76-39.11%1960 Sandy Koufax SGC 4Topps · $76-39.11%1955 Sandy Koufax SGC 6Topps · $4,550-35.67%1955 Sandy Koufax PSA 7Topps · $10,125-31.40%1955 Sandy Koufax SGC 1Topps · $720-29.41%1955 Sandy Koufax SGC 7Topps · $6,400-28.71%

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 58 most-traded cards in this basket; the recent window covers all 215 tracked cards. Not investment advice.

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