fxyz
AI's real limit is watts, not silicon
The binding constraint on AI scaling is electricity and power infrastructure, not semiconductor supply.
Result
If held over the last 3 months (Jul 14, 2026 – Oct 13, 2026): +1.2%. Over the same days: Chip stocks +1.0%, S&P 500 +4.1%.
What it holds
- Power Fuel: Gas & Energy, 40% of the money, +20.7% over 3 months: NATGAS, BRENTOIL, XLE. Natural gas and broad energy are the fastest-growing inputs to AI data centers.
- Nuclear & Uranium, 25% of the money, −12.5% over 3 months: URNM, IREN. Uranium and nuclear power are being fast-tracked as the only always-on clean power for AI campuses.
- Chip Giants: Priced for Unconstrained Growth, 25% of the money, −2.3% over 3 months: against NVDA, against AVGO, against SOXL. Semiconductor leaders are priced assuming unlimited power availability, which the grid will deny.
- Cash, 10%.
The plan behind it
Data center power demand is outpacing grid capacity, making energy infrastructure the scarce resource. Natural gas and uranium are the fuels being rushed online to feed AI. Power-hungry chip giants face a ceiling not from fab capacity but from kilowatts available. Meanwhile, chip stocks are priced for unconstrained growth that the grid cannot support, making them a short against the energy long.
What would prove it wrong: Grid capacity expands faster than expected via SMRs or permitting reform, or power prices fall while AI capex keeps rising.
FAQ
Can I make one from my own idea?
Yes. Write what you believe in plain words at https://f.xyz/create. fxyz asks a couple of questions, builds the portfolio and shows how it would have done over the last 3 months.
Can I turn a post on X into a theory?
Yes. Reply to the post and tag @fxyzai. It tests the view in the post and replies with the 3-month result and a link.
What can it trade?
Stocks (Tesla, Apple, Nvidia), crypto (Bitcoin, Ethereum, Solana), pre-IPO companies (OpenAI, Anthropic), indices (Nasdaq 100, S&P 500), commodities (gold, silver, oil, copper) and currencies (EUR/USD, USD/JPY). One theory can mix them, and bet for or against any of them.
How does it react to news?
On each check it reads the last two days of news on its biggest holdings and says whether the idea still holds. It can make one small change at a time: trim or drop one holding by up to 5 points. On autopilot the change waits 10 minutes so the owner can skip it; otherwise it asks first.
How do I run it with real money?
For real money, tap Make it mine, open your copy and choose Use real money, with an exchange connected: Hyperliquid, Lighter, Lighter (Robinhood), Backpack, Pacifica or Binance. The money stays in your own account there. fxyz can place trades, but it can never withdraw.
Can the AI get it wrong?
Yes. fxyz's AI turns the idea into holdings, and it can get that wrong: add a coin or stock that doesn't fit, or miss one that does. Check the holdings before you put money in. In your own copy, ask its chat to add or drop any of them.
What do the 3-month numbers mean?
What $100 would have done holding this mix over the last 3 months, at real prices. It is a what-if, not a record: past or simulated results are no promise of future ones, and nothing here is investment advice.