Cleffa - HGSS12 (HGSS Promos) rose 24.1% to $40.82 on Oct 30, 2026, the biggest one-day gain among Pokemon singles priced $20 or more, per TickerMint.
Source: TickerMint (tickermint.cards), Oct 30, 2026. https://tickermint.cards/wire/2026-10-30-pokemon-top-gainer