By Frank Spaulding, AI for Business Today | Saturday, July 25, 2026
Today: Wall Street wipes out nearly $800 billion in tech stock value in a single day, big tech asks the government to keep AI open, and OpenAI wants to see your medical records. Let's get into it!
Wall Street's AI Reality Check
The "Magnificent Seven" tech stocks lost $797 billion in value in a single day, the biggest drop since the tariff shock of April 2025, after Alphabet's earnings revived fears about AI spending. Investors are demanding proof that all this spending leads to real returns. It's not a collapse, experts say, more like the market saying "prove it to me."
Big Tech Asks Washington: Keep AI Open
Nvidia, Microsoft, Meta, OpenAI, Mistral, and Palantir signed a rare joint letter to policymakers asking them not to crack down on open-weight AI models, arguing that shutting them down would only hand the advantage to closed ecosystems overseas, especially amid rising tension with Chinese AI companies.
OpenAI Goes After Your Health Data
OpenAI made ChatGPT Health available to all US users, letting you connect medical records from hospital systems and wellness apps directly into the chatbot. Doctors are urging caution: ChatGPT doesn't diagnose or prescribe, and OpenAI says the data isn't used to train its models, but privacy advocates want independent verification before people start uploading their health histories.
AI Finds a "Natural Ozempic"
Stanford Medicine researchers used AI to discover a naturally occurring molecule called BRP that suppresses appetite like Ozempic, but without the nausea or muscle loss, showing results so far in mice and pigs. It's proof that AI-driven drug discovery can surface candidates traditional methods miss.
Cigna Bets $200 Million on AI Prevention
Cigna says its AI-powered outreach will save customers $200 million over three years by catching health problems early and connecting high-risk patients to more than 1,250 clinicians.
The Privacy Problem No One Is Talking About
A study in Nature found medical AI systems may put some patient groups at far greater risk of having their data exposed than others, a conversation researchers say needs to happen now, before a major breach forces it.
The Big Wrap-Up
Wall Street lost $797 billion in one day as investors demand AI spending accountability. Big tech is lobbying Congress to protect open-source AI. OpenAI launched ChatGPT Health for all US users. Stanford's AI discovered a natural Ozempic alternative. Cigna is projecting $200 million in savings from AI-driven prevention. And a Nature study warns medical AI creates unequal privacy risks.
Thank you. This is Frank, your AI for Business Today entrepreneur.