Frequently asked
What does the XY Black Star Promos · Composite track?
862 XY Black Star Promos cards graded PSA 7 to PSA 10, weighted by market cap. It started at 100.00 on 2026-05-15 and stands at 454.83.
How has the XY Black Star Promos · Composite moved?
It is up 8.1% over the past month and up 354.8% year to date.
Which cards carry the most weight in the XY Black Star Promos · Composite?
Charizard EX (PSA 10) at 7.6%, Pikachu EX (PSA 9) at 5.6% and Pikachu EX (PSA 10) at 4.2% of the index.
How is the XY Black Star Promos · 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.