With this move, the social-media platform is doing the reverse.

The crypto exchange FTX will be providing the infrastructure for Stocktwits’ crypto trading. Fees for crypto trading will be the same as they are on FTX, which has a tiered fee structure.

Stocktwits, founded in 2008, raised $30 million in a fundraising round in December that included Alameda Research Ventures, owned by

Sam Bankman-Fried,

who also owns FTX.

Stocktwits has added about 2 million registered users over the past two years, pushing its total to 6 million, and many of them are focused on crypto. Cryptocurrencies have ballooned into a $1.8 trillion market from $260 billion before the pandemic started two years ago.

As a result, digital currencies such as bitcoin and ethereum are among the most talked about assets on Stocktwits, said Chief Executive

Rishi Khanna,

and completely dominate the platform on weekends, when they are still trading but equities aren’t.

There is another reason the company is starting with crypto as opposed to equities—there are fewer regulatory hurdles to offering crypto trading, Mr. Khanna said.

What will make Stocktwits different from other commoditized trading services, Mr. Khanna said, is its established community of users on the site sharing information, trading tips, strategies and data.

“You can’t just throw money at it and make social happen,” he said. “There is a certain aspect of luck and timing that you need to get social really working.”

Write to Paul Vigna at paul.vigna@wsj.com