What if America's first small modular reactor reaches the grid?
The first commercial US SMR reaching grid power validates the tech and re-rates the sector, read here as AI-capex/power-supply optimism lifting NVDA and semis. The relevant template is the 2024 SMR equity euphoria (Oklo, NuScale) on hyperscaler power demand. Skeptical note: one demonstration unit does not equal economic, mass-deployable supply — NuScale's cancelled UAMPS project (2023) showed cost overruns kill orders, so fade an outsized, durable re-rate on a single first-of-a-kind milestone.
Every number ships with its receipt — the odds, the range, the precedents, and a public grade at Reality Check. The statistical machinery that produces it is proprietary.
The butterfly cascade
How this trigger trickles across markets, left → right — the root shock, its first‑order moves, then the ripple effects. Drag any node; tap a market for its real price history.
Resolution timeline — how this probability is moving
Our model's odds (electric blue) over time vs the market's (Polymarket, amber), from the past toward the 6–18 months horizon. Each dot is a real macro event that nudged the probability — green pushed it up, red pushed it down. Tap a dot for the source. Loading the probability audit trail…
What it would mean
If this plays out, it is a mixed shock. The first commercial US small modular reactor reaches grid power, validating the technology and re-rating the sector. The trigger decomposes into signed root‑shocks — AI capex ▲ — which propagate through our causal graph to the markets below.