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XY - Steam Siege set logo

XY - Steam Siege · Ultra Rare · PSA 10

Updated yesterday
XY - Steam Siege · Ultra Rare · PSA 10 · Inception May 15, 2026 · 12 constituents

As of Nov 14, 2026, the XY - Steam Siege · Ultra Rare · PSA 10 stands at 150.04, down 1.9% in 30 days (12 constituents).

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Current value
150.04
base 100 at inception
1D-2.6%30D-1.9%ITD+50.0%
Sales evidenceStrong
Constituents
12
vs 5 at inception
Year on year
-
26 weekly points
Last rebalance
Nov 14, 2026
Δ 0.0% cap
Divisor
21,903
continuous accounting

Top holdings

by weight

Top 5 hold 82.7% of index weight across 12 constituents.

Index value over time

Weekly index level. Pro members can view and export the complete recorded history. Constituents are cap-weighted with the divisor reset on each monthly rebalance.

XY - Steam Siege · Ultra Rare · PSA 1012 constituents
Index level
150.0
6M↑49.6%
May 17, 20266M · +49.6% · 26 weeksNov 14, 2026
May 2026100.3 - 187.2Nov 2026
Total cap
$3.21M
Median atom cap
$193.8K

Constituents

Every atom in the index, cap-weighted and dampened by sales evidence. Follow a card name to drill into the underlying card detail.

Showing 12 of 12
Constituents
Top 12 of 12 · 100.0% of index weight · cap-weighted
#CardWtLast Δ

Rebalances

Most recent weekly rebalance events. The divisor is reset on each event so the index level remains continuous through composition changes; subsequent moves are price-driven.

  1. Nov 14, 2026
    divisor21,329→21,903Δcap0.0%

    Added (0)
    None
    Removed (0)
    None
  2. Nov 7, 2026
    divisor21,716→21,875Δcap0.0%

    Added (0)
    None
    Removed (0)
    None
  3. Oct 24, 2026
    divisor22,158→22,187Δcap0.0%

    Added (0)
    None
    Removed (0)
    None
  4. Oct 17, 2026
    divisor17,809→18,334Δcap2.9%

    Added (2)
    • xerneas-break-82-steam-siege-holo
    • professor-sycamore-114-steam-siege-holo
    Removed (0)
    None
  5. Oct 10, 2026
    divisor14,284→14,284Δcap0.0%

    Added (0)
    None
    Removed (0)
    None
  6. Oct 3, 2026
    divisor13,932→14,542Δcap4.4%

    Added (1)
    • clawitzer-break-35-steam-siege-holo
    Removed (0)
    None

Methodology

Cap-weighted from confidence-scored fair values, rebalanced monthly with continuous divisor accounting.

Read the full methodology

Parent set

XY - Steam Siege set logoXY - Steam SiegeSet total cap$7.94M

Frequently asked

What does the XY - Steam Siege · Ultra Rare · PSA 10 track?
12 XY - Steam Siege Ultra Rare cards graded PSA 10, weighted by market cap. It started at 100.00 on 2026-05-15 and stands at 150.04.
How has the XY - Steam Siege · Ultra Rare · PSA 10 moved?
It is down 1.9% over the past month and up 50.0% year to date.
Which cards carry the most weight in the XY - Steam Siege · Ultra Rare · PSA 10?
M Gardevoir EX (PSA 10) at 31.4%, Gardevoir EX (PSA 10) at 15.0% and Steelix EX (PSA 10) at 13.9% of the index.
How is the XY - Steam Siege · Ultra Rare · PSA 10 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.

Related

Other indices that share this print run or this grade tier, plus the parent set.

Other grades · XY - Steam Siege · Ultra Rare

PSA 10 · Other print runs

Parent set

XY - Steam Siege
Set total cap
$7.9M