AsianFin -- A bitcoin mining company linked to former President Donald Trump’s two eldest sons surged in its stock market debut on Wednesday, boosting the value of their combined stake to more than $1.5 billion and underscoring the family’s growing involvement in digital assets.

American Bitcoin Corp shares more than doubled at one point, reaching $14.52 on the Nasdaq, before paring gains to close at $8.04 — still up 16.5% from its offering price.

Executive Chairman Asher Genoot said in an earlier interview that Donald Trump Jr. and Eric Trump collectively hold about 20% of the company, making them major beneficiaries of its rally.