Pokemon market · Pokemon index
Yamask Price Index
The Yamask Price Index closed at 794.26 on October 18, 2026, down 4.99% over 30 days. It follows 28 English Yamask cards and started at 1,000 on January 20, 2025.
By Double Holo Research
Updated October 18, 2026 · refreshed daily
- 7D-0.21%
- 30D-4.99%
- 1Y+37.75%
Index total value of 28 priced cards: $28.57
Full history
Since January 20, 2025, base 1,000
View daily values (637 days)
| Date | Level | Status |
|---|---|---|
| 794.26 | Published | |
| 797.32 | Published | |
| 796.20 | Published | |
| 794.54 | Published | |
| 801.76 | Published | |
| 801.76 | Published | |
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| 795.93 | Published | |
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| 998.64 | Published | |
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| 997.29 | Published | |
| 995.93 | Published | |
| 1,000.00 | Published |
Index summary
The index was down 0.21% over 7 days, down 4.99% over 30 days, and up 37.75% over one year. On October 18, 2026 its 28 cards had a combined value of $29. The most valuable was Yamask from Pokemon White Flare, at $8.89. The largest 7-day gain among its cards was Yamask [Reverse Holo], up 10.89% 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 | 28 |
| 28 of 28 | |
| $28.57 | |
| Methodology | Set and Pokemon indexes |
Biggest 7-day moves
Among cards in this index
Largest gains
| Card | Price | 7D |
|---|---|---|
 Yamask [Reverse Holo] | $3.36 | +10.89% |
Largest declines
| Card | Price | 7D |
|---|---|---|
 Yamask [Reverse Holo] | $2.25 | -4.26% |
 Yamask | $8.89 | -2.09% |
 Galarian Yamask | $2.81 | -1.40% |
 Yamask [Master Ball] | $2.84 | -0.35% |
Most valuable cards
All 28 cards. Prices are the daily market price from US online marketplace data.
Value by era
| Era | Cards | Value | Share |
|---|---|---|---|
| Black & White | 10 | $11.00 | 38.5% |
| Sun & Moon | 2 | $0.60 | 2.1% |
| Sword & Shield | 4 | $3.37 | 11.8% |
| Scarlet & Violet | 10 | $13.10 | 45.9% |
| Other | 2 | $0.50 | 1.8% |
Evolution line and related indexes
- Headline index for this era: DH Chase 100
- All Yamask cards and prices
- Every Pokemon price index
Frequently asked questions
What is the Yamask Price Index?
The Yamask Price Index is a daily index from Double Holo Research that follows the combined price of every priced English Yamask card. It started at 1,000 on January 20, 2025 and was at 794.26 on October 18, 2026.
Are Yamask cards going up in value?
Double Holo does not forecast prices. As of October 18, 2026, the Yamask Price Index was down 4.99% over 30 days and up 37.75% over one year.
What is the most valuable Yamask card?
Yamask from Pokemon White Flare had the highest price in the index on October 18, 2026, at $8.89.
How is the Yamask 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 Yamask 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
Yamask 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 Yamask Price Index closed at 794.26 on October 18, 2026, down 4.99% over 30 days.
Index levels from Double Holo Research, computed from the daily market price from US online marketplace data.
Double Holo, Yamask Price Index, October 2026, https://doubleholo.com/pokemon-market/pokemon/yamask
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.
Follow the cards behind the indexes
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