Elon Musk just became Twitter’s biggest shareholder after buying a 9.2% stake in the platform, a regulatory filing showed. The stake is worth around USD 2.89 bn based on Twitter’s stock price at market close on Friday. Musk’s purchase sent Twitter shares soaring around 26% in premarket trading, according to Bloomberg. The purchase comes a month after Musk polled his followers on the platform on whether Twitter adheres to the principle of freedom of speech, and floated the possibility of launching his own platform to rival Twitter.

Meta AI is losing some of its biggest researchers: The Facebook parent company seems to have lost some of its top AI talent this year, with at least four — and as many as six — “prominent members” leaving Meta AI in recent months, CNBC reports, citing people it says has knowledge of the matter. Although there doesn’t appear to be a specific reason driving the exodus, which is concentrated for the most part at the London AI lab, CNBC’s sources suggest that there’s a new wave of exits in the offing. While some are leaving for career advancements, others are pursuing better compensation in other positions or are looking for a change of pace by getting in on startups, the sources say.

Crypto exchange-traded funds are picking up steam and are bound for even further growth in Europe, where there’s already some USD 7.3 bn invested in these products, Bloomberg reports. If trends hold up, that figure could more than double by 2025, CoinShares International CEO Frank Spiteri said. DeFi Technologies is also set to pile into the growing investor interest in the crypto ETFs with the launch of three new ETFs through its subsidiary and Swiss based asset-management firm Valour Inc. The ETFs will be launched on the Euronext exchanges in Paris and Amsterdam on Wednesday.