ARK Invest (@ARKInvest)

Last week, Tesla held an event in Austin introducing the two-seat, purpose-built Cybercab to its Robotaxi fleet, and then the following evening commercialized its first rides. Tesla disclosed that, in just six weeks, the Robotaxi fleet increased its unsupervised driving miles 2.6x, from the 380,000 reported during Tesla’s second-quarter earnings call to one million miles. On its site, Tesla posted a “Robotaxi interest form” aimed at commercial fleet buyers, asking respondents to flag interest in purchasing a Cybercab fleet. As ARK outlined in Big Ideas 2026, fleet owners are an important component of the robotaxi value chain. The Cybercab is central to scaling Tesla’s robotaxi service at competitive prices and, in ARK’s view, to expanding autonomous ride-hail into a multi-trillion-dollar opportunity. At scale, we project that robotaxis could be priced as low as $0.25 per mile—approximately one-tenth the cost of human-driven ride-hail, as shown below, and roughly one-third the cost of personal car ownership. @TashaARK details more in this week's newsletter ⬇️

Last week, @SpaceXAI released Grok 4.6, its new frontier model designed for coding, agentic tasks, and knowledge work. Independent evaluations suggest that SpaceXAI has returned to the AI frontier competition based on both performance and cost. The economics of Grok 4.6 seem particularly compelling for AI agents. Artificial Analysis estimates that Grok 4.6 costs $0.84 per task on its Intelligence Index, placing it on the Pareto frontier for intelligence-versus-cost. More from @MattarARK in this week's newsletter ⬇️

Put a BOGO free coupon on the table and people ignore it. Make them win it and they redeem it before it expires in an hour. @LucraSports CEO Dylan Robbins joins FYI to explain how gamified rewards use the immediate gratification of sports betting, without the barriers to entry.

Director of Research, Digital Assets @LorenzoARK details the main takeaways from the Decentralized Finance Applications section of "Big Ideas 2026." To learn more, download the full report at

For more than 30 years, a key measure of technology capital spending peaked near the same level. That pattern has now broken to the upside. @CathieDWood explains why ARK believes the AI boom may be only beginning in July's "In The Know."

SpaceX says over 90% of its future market is AI, not space. @DMaguireARK, ACA breaks down what that means: orbital data centers, a potential $28.5 trillion Total Addressable Market (TAM), and why Starship is the only vehicle that can get there.

You may have heard our research on Tesla Robotaxis... @CathieDWood just rode one through Austin. No driver. No safety monitor. Ride along with Cathie as she shares her thoughts from the passenger seat, including a newly discovered line item for our model.

CZ built @Binance into the world’s largest crypto exchange. Now he’s explaining what he sees next for crypto, stablecoins, AI, and global finance. New FYI with @CathieDWood + @cz_binance and @LorenzoARK.