XY - Steam Siege · PSA 8

Updated today

XY - Steam Siege · PSA 8 · Inception May 15, 2026 · 32 constituents

As of Nov 14, 2026, the XY - Steam Siege · PSA 8 stands at 133.93, up 27.6% in 30 days (32 constituents).

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Current value

133.93

base 100 at inception

1D-0.0%30D+27.6%ITD+33.9%

Sales evidenceStrong

Constituents

vs 9 at inception

Year on year

26 weekly points

Last rebalance

Nov 14, 2026

Δ +0.8% cap

Divisor

1,898

continuous accounting

Top holdings

by weight

Top 5 hold 81.1% of index weight across 32 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 · PSA 832 constituents

Index level

133.9

6M↑31.4%

May 17, 20266M · +31.4% · 26 weeksNov 14, 2026

May 2026100.8 - 135.3Nov 2026

Total cap

$252.1K

Median atom cap

$711

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 20 of 32


Gardevoir EX · Secret	PSA8	45.0%	$113.4K	Very strong	-0.6%
M Gardevoir EX · Ultra Rare	PSA8	15.0%	$37.9K	Strong	+0.5%
Volcanion EX · Secret	PSA8	8.0%	$20.1K	Very strong	+0.3%
Steelix EX · Ultra Rare	PSA8	7.3%	$18.5K	Strong	+0.5%
M Gardevoir EX · Ultra Rare	PSA8	5.8%	$14.6K	Very strong	-0.3%
Gardevoir EX · Ultra Rare	PSA8	5.5%	$13.9K	Strong	+1.6%
M Steelix EX · Ultra Rare	PSA8	5.1%	$12.8K	Strong	+0.5%
Volcanion EX · Ultra Rare	PSA8	1.6%	$4.0K	Strong	+0.3%
M Steelix EX · Ultra Rare	PSA8	1.3%	$3.2K	Limited	0.0%
Bisharp · Cosmos-2017 Knock Out Collection	PSA8	1.1%	$2.7K	Very strong	+0.2%
Professor Sycamore · Ultra Rare	PSA8	0.9%	$2.2K	Limited	-2.4%
Azumarill · Reverse Holo	PSA8	0.8%	$1.9K	Moderate	+0.5%
Shiftry · Holo Cosmos-2017 Knock Out Collection - Cosmos-2017 Knock Out Collection	PSA8	0.5%	$1.3K	Strong	-0.5%
Pokémon Ranger · Ultra Rare	PSA8	0.5%	$1.3K	Limited	+0.2%
Xerneas BREAK · Ultra Rare	PSA8	0.4%	$1.1K	Limited	-0.0%
Ampharos · Normal	PSA8	0.3%	$738	Sparse	0.0%
Azumarill · Normal	PSA8	0.3%	$684	Limited	0.0%
Bisharp · Normal	PSA8	0.2%	$388	Limited	-1.7%
Infernape · Normal	PSA8	0.1%	$278	Sparse	0.0%
Shiftry · Normal	PSA8	0.1%	$251	Limited	-0.2%

Constituents

Top 20 of 32 · 99.6% 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.

Nov 14, 2026
divisor1,883→1,898Δcap0.8%
Added (2)
- volcarona-15-xy-steam-siege-reverse-holo
- nuzleaf-10-xy-steam-siege-reverse-holo
Removed (0)
None
Nov 7, 2026
divisor1,890→1,880Δcap0.0%
Added (0)
None
Removed (0)
None
Oct 24, 2026
divisor1,943→1,940Δcap0.0%
Added (0)
None
Removed (0)
None
Oct 17, 2026
divisor1,817→1,880Δcap3.5%
Added (12)
- shiftry-11-steam-siege-normal
- infernape-20-steam-siege-normal
- bisharp-64-steam-siege-normal
- xerneas-break-82-steam-siege-holo
- professor-sycamore-114-steam-siege-holo
- bergmite-36-xy-steam-siege-reverse-holo
- mankey-52-xy-steam-siege-reverse-holo
- primeape-53-xy-steam-siege-reverse-holo
- bisharp-64-xy-steam-siege-cosmos-2017-knock-out-collection
- bisharp-64-xy-steam-siege-reverse-holo
- shiftry-11-xy-steam-siege-cosmos-2017-knock-out-collection
- tangela-1-xy-steam-siege-reverse-holo
Removed (0)
None
Oct 10, 2026
divisor1,711→1,713Δcap0.1%
Added (1)
- hoopa-51-xy-steam-siege-reverse-holo
Removed (0)
None
Oct 3, 2026
divisor1,678→1,678Δcap0.0%
Added (6)
- clawitzer-break-35-steam-siege-holo
- ampharos-40-steam-siege-normal
- chandelure-50-steam-siege-normal
- hydreigon-86-steam-siege-normal
- hydreigon-86-xy-steam-siege-reverse-holo
- gardevoir-spirit-link-101-xy-steam-siege-reverse-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 SiegeSet total cap$7.94M

Frequently asked

What does the XY - Steam Siege · PSA 8 track?

32 XY - Steam Siege cards graded PSA 8, weighted by market cap. It started at 100.00 on 2026-05-15 and stands at 133.93.

How has the XY - Steam Siege · PSA 8 moved?

It is up 27.6% over the past month and up 33.9% year to date.

Which cards carry the most weight in the XY - Steam Siege · PSA 8?

Gardevoir EX (PSA 8) at 45.0%, M Gardevoir EX (PSA 8) at 15.0% and Volcanion EX (PSA 8) at 8.0% of the index.

How is the XY - Steam Siege · PSA 8 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.

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

Other grades · XY - Steam Siege

PSA 8 · Other print runs

Parent set

XY - Steam Siege

Set total cap

$7.9M

XY - Steam Siege · PSA 8

Top holdings

Index value over time

Constituents

Rebalances

Methodology

Parent set

Frequently asked

Related

Other grades · XY - Steam Siege

PSA 8 · Other print runs

Parent set