The Geraldine Weiss dividend yield theory applied to RATIONAL Aktiengesellschaft ($RATIY) uses the stock's historical dividend yield range to estimate when the price is cheap or expensive relative to its own dividend-paying history (2016–2026). Based on that history, $RATIY is currently trading close to its fair value.

When the $RATIY yield climbs above 🟢 2.88%, the stock has historically been undervalued. When the yield falls below 🔴 0.52%, RATIONAL Aktiengesellschaft has historically been overvalued. The dashed 🟡 fair value (~1.70%) line marks the orientative midpoint between both extremes, not a price target.