Donald Trump Jr. will join the board of directors of the parent of the right-wing ecommerce site PublicSquare, Bloomberg reported Tuesday, the President-elect’s son’s latest conservative business venture ahead of his father’s second presidential term.

Shares of the publicly traded PSQ Holdings surged more than 100% in limited trading following the announcement. The company’s $72 million market capitalization at Monday’s market close makes it more vulnerable to massive swings. Its $4.60 premarket share price is a fraction of its peak $35 share price set shortly after the company began publicly trading last July following a reverse merger.

Trump Jr.’s reported directorship comes a few weeks after news broke he would pursue a conservative corporate career rather than an official role in his father’s administration, joining the venture capital firm 1789 Capital, which describes itself as a fund seeking investments in startups focused on Trump-aligned areas like deglobalization. Trump Jr. is worth $50 million, according to Forbes’ estimates, and he also serves on the board of Trump Media & Technology Group, the parent of his father’s social media platform Truth Social. Still, the younger Trump has some role in his father’s political orbit, pushing for JD Vance’s selection as running mate and helping to vet candidates for the Trump administration. He’s reportedly serving as a “loyalty scanner,” and described his role as making sure “bad actors are not getting into the administration.”

We estimate Donald Trump Jr.’s net worth at about $50 million.