Professor Oak's New Theory #101 HeartGold & SoulSilver Price

Professor Oak's New Theory #101 price, trend & prediction

Professor Oak's New Theory #101 (Normal, Uncommon) from HeartGold & SoulSilver (2010) has a market price of $0.75 raw as of October 11, 2026, the TCGplayer market price for this exact printing. For context, the median HeartGold & SoulSilver card is $8.60; this one ranks #209 of 229 priced printings. Over the last 30 days the price has eased (−6.3%), −18.5% over 90 days. Its 180-day range is $0.74 to $0.97 — it is trading near the bottom of that range.

Professor Oak's New Theory #101 price prediction: if recent momentum continues, the 30-day trend for this card is downward. Momentum is pointing down: the price is lower across the windows we track (−6.3% over 30 days, +0.0% over 7 days, −18.5% over 90 days). This is a read of past price moves, not a model forecast and not investment advice — see the forecast methodology and public accuracy scoreboard for how our ML outlooks are built and scored.