Good evening and welcome to Markets Desk, your end-of-day read on what moved the needle.
Roku shares exploded higher on Friday, capping a run that has taken the stock up seventy-eight percent over the past year. That kind of move demands attention from investors who may have written the streaming platform off during its prolonged downturn. The question now is whether this rally has legs or is running ahead of the fundamentals.
Turning to energy, nuclear startup Antares has successfully brought its Mark-zero microreactor to criticality, beating a July fourth deadline set under a Trump administration pilot program. The broader race to rebuild America's nuclear fuel supply chain is accelerating fast, driven almost entirely by the power demands of the AI boom. The catch is that North American enrichment capacity remains dangerously thin, creating a genuine bottleneck.
And on the AI front, Anthropic and its peers are pushing hard toward systems capable of building and improving other AI — a development with profound implications. The stakes get considerably higher when that self-improving architecture gets applied to mental health tools, where the margin for error is essentially zero and the ethical guardrails remain deeply unsettled.
That's the tape. Markets Desk, signing off the floor.
