Frequently asked
What does the XY - Steam Siege · Ultra Rare · PSA 9 track?
9 XY - Steam Siege Ultra Rare cards graded PSA 9, weighted by market cap. It started at 100.00 on 2026-05-15 and stands at 110.80.
How has the XY - Steam Siege · Ultra Rare · PSA 9 moved?
It is up 2.8% over the past month and up 10.8% year to date.
Which cards carry the most weight in the XY - Steam Siege · Ultra Rare · PSA 9?
M Gardevoir EX (PSA 9) at 33.7%, M Steelix EX (PSA 9) at 15.9% and Steelix EX (PSA 9) at 15.1% of the index.
How is the XY - Steam Siege · Ultra Rare · 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.