Top holdings
by weight- Snap Squirtle · PSA 844.3%
- Snap Articuno · PSA 819.5%
- Snap Chansey · PSA 813.3%
- Ancient Mew I · PSA 87.7%
- Snap Pikachu · PSA 84.3%
Top 5 hold 89.1% of index weight across 13 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.
Constituents
Every atom in the index, cap-weighted and dampened by sales evidence. Follow a card name to drill into the underlying card detail.
- 1Snap Squirtle- 64 Mario Stadium Best Photo Contest · PSA 8 · $3.42M44.3%↑0.4%
- 2Snap Articuno- 64 Mario Stadium Best Photo Contest · PSA 8 · $1.51M19.5%↑0.4%
- 3Snap Chansey- 64 Mario Stadium Best Photo Contest · PSA 8 · $1.02M13.3%↑0.4%
- 4Ancient Mew I- "Nintedo" Error · PSA 8 · $592.0K7.7%·0.0%
- 5Snap Pikachu- Trainer Magazine Vol. 1 · PSA 8 · $331.7K4.3%↓0.7%
- 6Snap Charmander- 64 Mario Stadium Best Photo Contest · PSA 8 · $283.4K3.7%↑0.8%
- 7Grand Party Trainer- Double Black Star · PSA 8 · $145.9K1.9%↑0.8%
- 8Ancient Mew IIancient-mew-ii-japanese-promos-1998-99-p-ancientmewii-666084 · PSA 8 · $108.2K1.4%·0.0%
- 9Ancient Mew Iancient-mew-i-japanese-promos-1998-99-p-ancientmewi-666082 · PSA 8 · $94.8K1.2%↓0.2%
- 10Psyduck- Natta Wake Vol. 2 · PSA 8 · $90.4K1.2%↓0.9%
- 11Venusaur-Holo- Game Boy · PSA 8 · $59.5K0.8%↑0.7%
- 12Snap Koffing- 64 Mario Stadium Best Photo Contest · PSA 8 · $39.7K0.5%↓0.1%
- 13Mankey-Glossy- Natta Wake Vol. 1 · PSA 8 · $16.9K0.2%↓0.8%
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.
- Sep 26, 2026divisor71,458→71,484Δcap0.0%Added (1)
- 1999-challenge-road-japanese-promos-1998-99-p-1999challengeroad-tropical-mega-battle-666090
Removed (0)None - Sep 19, 2026divisor11,708→71,630Δcap511.8%Added (4)
- snap-chansey-japanese-promos-1998-99-113-64-mario-stadium-best-photo-contest-2042533
- snap-charmander-japanese-promos-1998-99-4-64-mario-stadium-best-photo-contest-2480154
- snap-squirtle-japanese-promos-1998-99-7-64-mario-stadium-best-photo-contest-2480155
- snap-articuno-japanese-promos-1998-99-144-64-mario-stadium-best-photo-contest-2522523
Removed (0)None
Methodology
Cap-weighted from confidence-scored fair values, rebalanced monthly with continuous divisor accounting.
Read the full methodologyParent set
Japanese Promos 1998-99Set total cap$24.74MCap-weighted, with each constituent dampened by the sales evidence behind its fair value so noisy inputs move the index less. Weekly rebalances with continuous-divisor accounting, so population growth and membership changes never move the level: only price action does. A constituent needs a fair value and a non-zero graded population; sales evidence adjusts its weight rather than gating its inclusion. Per-grade series isolate one tier, composites span PSA 7-10. All values are USD-denominated, base 100 at inception.
Related
Other indices that share this print run or this grade tier, plus the parent set.
Other grades · Japanese Promos 1998-99
PSA 8 · Other print runs
No other print runs at this grade yet.




































