On September 15, X-Energy fell 5.02% in regular trading, trading at $14.855 per share, with turnover of approximately $30.18 million. The stock gave back gains from the prior session's 7.64% rebound, resuming its downward trajectory.

On the news front, the decline reflects continued selling pressure stemming from Piper Sandler's initiation of coverage with an underweight rating and a $9 price target, representing roughly 40% downside from the current level and well below the analyst consensus target of $34.38. Since the rating was issued on September 9, shares have dropped sharply with elevated volume. On the fundamental side, Q2 revenue of $54.6 million exceeded expectations, but the adjusted loss of $0.15 per share missed the consensus estimate of $0.11. Meanwhile, UK regulators accepted X-Energy's Xe-100 small modular reactor into the generic design assessment process, with a joint venture targeting up to 6 gigawatts of new nuclear capacity in Britain, though the positive development was insufficient to offset bearish sentiment.

X-Energy develops advanced small modular reactor technology and manufactures nuclear fuel, serving utility and industrial customers amid growing power demand driven by artificial intelligence and data center expansion.

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