Shares of nuclear power companies closed higher on Friday after U.S. President Donald Trump signed executive orders seeking to jumpstart the industry.

Shares in companies tied to nuclear power jumped Friday, helped by President Donald Trump’s rollout of four executive orders that aim to provide a boost to the sector, but there were concerns about whether there could be much of a near-term impact.

Shares of nuclear power companies surged Friday as President Donald Trump signed new executive orders aimed at boosting the industry.