Brian Armstrong, the CEO of Coinbase, stirred up discussions during the company’s third-quarter earnings call by revealing his interest in prediction markets. He candidly admitted that he was “a little bit distracted” while tracking the prediction market regarding what Coinbase would announce in their upcoming earnings call. To date, this revelation has drawn praise as well as pushback from all sides.
On the call, Armstrong pointed to prediction markets found on platforms like Kalshi and Polymarket. He noted that users on these platforms were frequently engaged in “mention markets.” Their conversations seemed to foreshadow his statements even before he published them. Here’s why his comments created a windfall on Kalshi and Polymarket for knowledgeable traders. This action calls the ethics of allowing a CEO to conduct this type of market manipulation into question.
Armstrong’s lighthearted approach to the situation included a post on X, where he remarked, “lol this was fun – happened spontaneously when someone on our team dropped a link in the chat.” Yet the casual tone of his comments was a stark difference to the serious implications they could hold for the industry. That disconnect was jarring.
Unlike any other prediction market operator, Coinbase has a very direct financial interest in prediction markets, having invested in both Kalshi and Polymarket. On the companies earnings call, Armstrong doubled down on Coinbase’s aim to nurture prediction markets through its recently launched Everything Exchange platform. This integration is another sign of Coinbase’s dedication to growing its products in this developing field.
Not all reactions have been positive. Many industry experts have voiced their dismay over Armstrong’s comments. They read his remarks as an undermining of the gravity of cryptocurrency investing. Former Anthemis group partner Jeff Dorman’s reaction—as a leading figure in the crypto community—was blistering. He blasted Armstrong for what he considered dangerous market manipulation. He stated, “It’s not fun working tirelessly for 8 years trying to educate institutional investors on the value of crypto investing as an investable asset class, and working to help them gain comfort in this industry, while one of the supposed ‘leaders’ openly mocks the industry with crap like this.”
Dorman further emphasized his discontent by asserting, “you need your head examined if you think it’s cute or clever or savvy that the CEO of the biggest company in this industry openly manipulated a market.”
Polymarket quickly got involved in the matter, describing Armstrong’s comments as some “diabolical work.” That underscores the contentious and polarized views that remain around his tenure.
Coinbase’s further—foray—into new prediction markets continues to make waves. As always, we’ll be watching to see how Armstrong’s statements end up affecting or restoring public confidence and trust in the cryptocurrency space.

