Frequently asked
What does the Japanese Promos 1998 · Composite track?
41 Japanese Promos 1998 cards graded PSA 7 to PSA 10, weighted by market cap. It started at 100.00 on 2026-05-15 and stands at 143.07.
How has the Japanese Promos 1998 · Composite moved?
It is up 75.8% over the past month and up 43.1% year to date.
Which cards carry the most weight in the Japanese Promos 1998 · Composite?
Pikachu-Holo Illustrator (PSA 10) at 25.2%, Pikachu Birthday White Star-2nd Anniv. (PSA 10) at 20.4% and Pikachu Birthday White Star-2nd Anniv. (PSA 9) at 7.6% of the index.
How is the Japanese Promos 1998 · Composite calculated?
The level is the constituents' combined market cap (fair value times graded population) divided by a divisor, with each card's weight dampened by the confidence of its fair value. The index rebalances weekly and the divisor absorbs every membership and population change, so only prices move the level. Values are recomputed daily from graded sales.