Some traders made tens of millions off a new cryptocurrency launched by President Trump and his sons. Many others lost out.

The president’s promotion of a speculative digital coin left some crypto investors feeling blindsided, while others saw it as a gimmick that undermined the industry’s credibility.

The order signaled that the president intends to promote an industry that faced scrutiny during the Biden administration — and that he has a personal stake in.

The returning first lady and Barron Trump, the son she had once shielded from the public eye, used Monday’s inauguration to reintroduce themselves.

The president-elect and his family have a direct and potentially lucrative stake in the sale of a cryptocurrency product that surged in value in the hours after going on sale, days before his inauguration.

The cryptocurrency industry has pushed President-elect Donald J. Trump to establish one, creating real political momentum behind the plan.

Even as Telegram faces legal scrutiny and grapples with billions in debt, it is set to be profitable for the first time as it tries cryptocurrencies, subscriptions and ads.