Unity Software (U) shares plummeted nearly 30% on Wednesday after the game software specialist posted a market-beating Q4 but issued downbeat guidance for the current quarter. The post-earnings plunge pushed U’s relative strength index (14-day) down to about 26, signaling deeply oversold conditions that often trigger a relief rally. More News from Barchart Still, investors are cautioned against buying the dip in Unity stock that’s now down more than 50% versus its year-to-date high. www.barchart.com ...