Investment thesis · Live
Nuclear power's real bottleneck isn't uranium, it's Western enrichment capacity after the Russian import ban
The bottleneck in nuclear isn't uranium, it's Western enrichment: the Russian import ban is driving up SWU prices and enrichers' margins.
Published July 8, 2026 · 180-day horizon · regulation
Basket return
+4.6%
equal weight, since publication
The market over the same window
+2.6%
benchmark for this basket
Edge over the market
+2.0%
in percentage points
Causal chain: US ban on imports of Russian enriched uranium → Rising demand: reactor life extensions and SMR/HALEU → Limited Western enrichment and conversion capacity → SWU and UF6 conversion prices spiking → Long-term contracts and higher margins for Western enrichers → Centrus (LEU) → Cameco (CCJ) → Silex (SLX)
What this thesis rests on
Each one is a statement that has to be true. When a filing says otherwise, the thesis is in trouble, and this is where we say so.
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The US ban on Russian enriched uranium imports stays in force through 4 January 2027, with no new DOE waivers issued for Russian SWU deliveries to US utilities beyond the pre-2028 exemptions already granted.
regulatory · Unverified
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The average SWU price indicator reported in Centrus and Cameco filings stays above $150 per SWU in the two quarterly reports after publication.
financial · Unverified
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Centrus keeps its DOE HALEU operation contract at Piketon through 4 January 2027, with no termination or descoping announced on an 8-K and at least one follow-on option period exercised.
operational · Unverified
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Neither Urenco nor Orano starts commercial operation of new Western enrichment capacity before 4 January 2027; announced Eunice and Tricastin expansions add no operating SWU in that window.
competitive · Unverified
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Cameco's average realized UF6 conversion price stays above $35 per kgU in its next two quarterly reports, with Port Hope output at or above 12,000 tonnes UF6 annualized.
financial · Unverified
The market looks at nuclear power through the lens of the uranium price, but the real bottleneck in the fuel cycle sits further downstream: in conversion (UF6) and enrichment (a service measured in SWU). That is where the structural shortage is concentrated, and its source is policy, not geology.
The US law banning imports of Russian enriched uranium (2024) cuts off a supplier that provided roughly one quarter to one third of American enrichment services. Russia responded with export restrictions. Western capacity (Urenco, Orano) is limited and takes years to expand, not quarters. The result: SWU and UF6 conversion prices have shot up to multi-year highs, and enrichment plants can sign long-term contracts on steadily better terms.
This thesis, over time
What has happened since publication. Every entry is computed as of its own date, from price history.
August 22, 2026
Day 45 of 180: basket +4.6%
The first quarter of the horizon is behind this thesis. The equal-weight basket stands at +4.6% since publication day. The benchmark (S&P 500) returned +2.6% over the same window, so the basket is ahead of its market by 2.0 percentage points. The strongest contributor is CCJ (+8.3%), the weakest is SLX (+0.8%). 135 days remain until the verdict.
Open the interactive thesis
Interactive causal map, the basket charted against its market, and the full timeline.
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This is analysis, not investment advice and not a recommendation to buy or sell anything. We publish it and track it in public, mistakes included. Any decision is yours and yours alone.