Frequently asked
What does the XY - Steam Siege · PSA 9 track?
13 XY - Steam Siege cards graded PSA 9, weighted by market cap. It started at 100.00 on 2026-05-15 and stands at 111.65.
How has the XY - Steam Siege · PSA 9 moved?
It is up 4.5% over the past month and up 11.6% year to date.
Which cards carry the most weight in the XY - Steam Siege · PSA 9?
Gardevoir EX (PSA 9) at 43.1%, M Gardevoir EX (PSA 9) at 15.3% and Volcanion EX (PSA 9) at 10.1% of the index.
How is the XY - Steam Siege · PSA 9 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.