Last Friday morning, Beijing's Commerce Ministry posted a new rule covering 40 technologies. The core files that power AI models. Chip designs. Computing cluster blueprints. Companies must register with the government now. Not after the comment period ends on November 15. Now. That same Friday morning, your TV was still running the headline about the US-China trade truce to January 2027.

I can't stop thinking about this.

JPMorgan tracks a basket of 41 companies tied to AI. That basket holds 49% of the S&P 500's total market value. Chip stocks alone sit at 19.7% of the index. Four times their weight in mid-2020. Nearly half your index fund rides on AI. And the trade truce that made the front page does not cover a single AI technology.

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Go here for the full story.

I get it. The truce is real. Bessent made it official. The Busan framework runs through January 10, 2027. No new tariffs. No new controls on rare earths. Before the summit, reports hinted that AI and chip controls might be on the table. None were agreed. The two sides set up an AI hotline. No binding deals. No pause on AI work. No change to chip rules. The truce covers tariffs and minerals. It does not cover the tech your portfolio depends on.

Here is what China did instead. It split 40 technologies into two tiers. Fourteen are banned from export. Twenty-six need a license. The AI core sits in the restricted tier: the math files that make models work, source code, designs, training methods. The cutoffs are specific. Two trillion parameters or more. Think of those as the decision points inside a model. A top-ten rank on global benchmarks. Or a training run so large it only hits the biggest models on the planet. DeepSeek wants to build an eight-trillion-parameter model. Alibaba is planning ten trillion for Qwen. Both clear those lines by a wide margin. And the real teeth are in the process. The registration rule is live right now. The comment window has not even closed. Deals under way last Friday are covered too.

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Here's what worries me. I keep hearing that American companies just dabble in Chinese AI. They don't. OpenRouter is a tool firms use to pick between AI models. By mid-July, Chinese models handled 58% of the AI work by US firms on that platform. That share has sat above 30% every week since February. These are not test runs. Coinbase runs 1,200 AI agents on Chinese models. It cut its AI bill in half. Lindy moved most of its traffic from Anthropic's Claude to DeepSeek. Airbnb and Uber quietly adopted Chinese models for live work. AWS offers DeepSeek and Qwen in its catalog. So does Azure. Alibaba's Qwen family has passed three billion downloads. We built a supply chain on Chinese AI the same way we built one on Chinese rare earths a decade ago. And we know how that story ended.

Now Beijing has its hand on the valve. Open-source models already released get a carve-out under the draft. They stay available. But here is the catch. If you run a covered model on servers abroad, that counts as an export. China built its name by giving AI models away for free. This rule keeps that door open for the past. It puts the frontier behind a license. Our companies plan to build on the next wave of Chinese models. Those models will need Beijing's stamp before the files cross the border. Beijing did not shut the tap. It installed a meter.

I don't think most people realize the market already feels this. Chip stocks are cracking. The Philadelphia Semiconductor Index posted an eight-day losing streak. That is the longest since the 2008 crisis. Roughly $2 trillion in market value gone in eight sessions. TSMC reported Q3 revenue of $46.72 billion. That is up 41.2% from a year ago. The stock is still down 13% from its October high. A blowout quarter could not lift it. Nvidia closed at $214.13 last Friday. Down 6.2% from its close on September 30. Its share of China's AI chip market fell to 34% in the first half of this year. Shipments to China dropped 44%. Nobody knows how deep the cracks run.

Here is the number I want you to take to the golf course. Forty-nine percent. JPMorgan says 41 AI stocks now make up 49% of the S&P 500's market value. One industry has not held that much weight since railroads in the 1800s. Every dollar in your index fund has 49 cents riding on AI. Ten stocks added $4.93 trillion in market cap this year. That is 59% of the entire index's gain. Meanwhile, 185 stocks in the S&P 500 are down in 2026. The index itself sits 13% higher. The gains are narrow. They all sit on one fault line.

Two documents landed on the same desk last Friday. One was the truce that filled every screen you watch. The other was a filing from Beijing that most Americans will never read. Half your retirement sits in the quiet space between those two pieces of paper.

More on this tomorrow.

— American Ledger