Tesla Inc. shares experienced significant gains following the company's latest quarterly earnings report. The stock surged in after-hours trading, initially rising by 11.1% and eventually extending to a 16% increase by the next trading day. This marks Tesla's most substantial intraday gain in three years and its best day since March 2021. The rally was noted as Tesla's strongest post-earnings opening since October 2019, contrasting sharply with the previous trend where Tesla shares typically opened down at least 4% after earnings announcements. The surge occurred as the earnings call came to an end.