Greninja Star (Sword & Shield Promo Cards) fell 8.1% to $19.10 on Oct 20, 2026, the biggest one-day drop among Pokemon singles priced $20 or more, per TickerMint.
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Source: TickerMint (tickermint.cards), Oct 20, 2026. https://tickermint.cards/wire/2026-10-20-pokemon-top-decliner