Pokemon market · Pokemon index
Iron Boulder Price Index
The Iron Boulder Price Index closed at 655.25 on October 18, 2026, down 9.14% over 30 days. It follows 11 English Iron Boulder cards and started at 1,000 on January 20, 2025.
By Double Holo Research
Updated October 18, 2026 · refreshed daily
- 7D-1.89%
- 30D-9.14%
- 1Y+6.82%
Index total value of 11 priced cards: $37.88
Full history
Since January 20, 2025, base 1,000
View daily values (637 days)
| Date | Level | Status |
|---|---|---|
| 655.25 | Published | |
| 658.02 | Published | |
| 660.79 | Published | |
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| 1,000.00 | Published |
Index summary
The index was down 1.89% over 7 days, down 9.14% over 30 days, and up 6.82% over one year. On October 18, 2026 its 11 cards had a combined value of $38. The most valuable was Iron Boulder ex from Pokemon Temporal Forces, at $18.77. The largest 7-day gain among its cards was Iron Boulder ex, up 0.74% over 7 days.
Index summaries are informational only and not financial advice. Past performance does not guarantee future results.
Index facts
| Started | January 20, 2025 at 1,000 |
|---|---|
| Cards in the index | 11 |
| 11 of 11 | |
| $37.88 | |
| Methodology | Set and Pokemon indexes |
Biggest 7-day moves
Among cards in this index
Largest gains
| Card | Price | 7D |
|---|---|---|
 Iron Boulder ex | $1.36 | +0.74% |
Largest declines
| Card | Price | 7D |
|---|---|---|
 Iron Boulder ex | $18.77 | -2.70% |
 Iron Boulder [Master Ball] | $7.41 | -2.37% |
 Iron Boulder ex | $8.03 | -0.74% |
Most valuable cards
All 11 cards. Prices are the daily market price from US online marketplace data.
| Rank | Card | Price | 7-day change |
|---|---|---|---|
| 1 | Iron Boulder exPokemon Temporal Forces · 207 | $18.77 | -2.70% |
| 2 | Iron Boulder exPokemon Temporal Forces · 217 | $8.03 | -0.74% |
| 3 | Iron Boulder [Master Ball]Pokemon Prismatic Evolutions · 46 | $7.41 | -2.37% |
| 4 | Iron Boulder exPokemon Temporal Forces · 192 | $1.36 | +0.74% |
| 5 |  Iron Boulder exPokemon Temporal Forces · 99 | $0.65 | -4.41% |
| 6 |  Iron Boulder ExPokemon Scarlet & Violet Promos · 147 | $0.58 | -3.33% |
| 7 |  Iron Boulder [Poke Ball]Pokemon Prismatic Evolutions · 46 | $0.32 | +18.52% |
| 8 |  Iron Boulder [Reverse Holo]Pokemon Stellar Crown · 71 | $0.26 | -3.70% |
| 9 |  Iron Boulder [Reverse]Pokemon Prismatic Evolutions · 46 | $0.19 | +18.75% |
| 10 |  Iron BoulderPokemon Stellar Crown · 71 | $0.18 | 0.00% |
| 11 |  Iron BoulderPokemon Prismatic Evolutions · 46 | $0.13 | 0.00% |
Value by era
| Era | Cards | Value | Share |
|---|---|---|---|
| Scarlet & Violet | 11 | $37.88 | 100.0% |
Evolution line and related indexes
- Headline index for this era: DH Chase 100
- All Iron Boulder cards and prices
- Every Pokemon price index
Frequently asked questions
What is the Iron Boulder Price Index?
The Iron Boulder Price Index is a daily index from Double Holo Research that follows the combined price of every priced English Iron Boulder card. It started at 1,000 on January 20, 2025 and was at 655.25 on October 18, 2026.
Are Iron Boulder cards going up in value?
Double Holo does not forecast prices. As of October 18, 2026, the Iron Boulder Price Index was down 9.14% over 30 days and up 6.82% over one year.
What is the most valuable Iron Boulder card?
Iron Boulder ex from Pokemon Temporal Forces had the highest price in the index on October 18, 2026, at $18.77.
How is the Iron Boulder Price Index calculated?
It adds up the daily market price of every card in the index. Each day the change is measured only on cards that were in the index on both days, so a card that joins never moves the level on its first day. A day is published when cards making up at least 90% of the index value have a recent price.
Can I download the Iron Boulder Price Index data?
Yes. The full daily history is a free CSV file under the CC BY 4.0 license, one row for every day with its status. Credit: Double Holo Research, doubleholo.com/pokemon-market.
Download the data
Iron Boulder Price Index daily history (CSV): date, level, total value, and priced cards for every day, with its status, free under CC BY 4.0.
How it is built
The combined price of every card in the index, starting at a base of 1,000 points. It compares each day's prices with the day before, using only cards in the index on both days. Methodology · Market overview
The Iron Boulder Price Index closed at 655.25 on October 18, 2026, down 9.14% over 30 days.
Index levels from Double Holo Research, computed from the daily market price from US online marketplace data.
Double Holo, Iron Boulder Price Index, October 2026, https://doubleholo.com/pokemon-market/pokemon/iron-boulder
Index levels are points, base 1,000. Prices in USD (shown in your preferred currency when set), from the daily market price from US online marketplace data, compiled by Double Holo Research.
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