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Arithmos · Index of the Week

Nuclear Renaissance 20

Twenty names across uranium miners, fuel cycle, reactor builders, SMR developers and utilities running existing fleets, weighted by enrichment capacity exposure.

Why it won

Nuclear ETFs lean heavily on uranium price beta. This thesis covers the full cycle, from mining to reactor builds to existing fleet operators getting paid for AI base-load power. The enrichment-capacity weight captures the real bottleneck in the nuclear supply chain rather than just the spot price of yellowcake.

The prompt

Nuclear renaissance index. Include uranium miners, fuel cycle, reactor builders, SMR developers and utilities with significant existing nuclear fleets. 20 names, weight by exposure to enrichment and fuel cycle capacity rather than spot uranium.

Methodology

  • Universe: any listed name with disclosed exposure to uranium mining, conversion, enrichment, fuel fabrication, reactor builds, SMR development, or operating nuclear utility fleets.
  • Segment caps: miners no more than 40%, utilities no more than 35%, SMR developers no more than 20%, fuel cycle no more than 25%.
  • Quality screen for utilities: at least 25% of generation from nuclear.
  • Weight by disclosed share of global enrichment or fuel-cycle capacity for fuel names, by nuclear EBITDA for utilities, by NAV for miners.
  • Semi-annual rebalance.

Backtest

CAGR28.2%
Vol32.6%
Sharpe0.83
Max DD-38.4%
Period: Apr 2023 to Apr 2026 (3Y)
3-year backtest beats SPY by 15.6% annualised at roughly 2.4x the volatility, with drawdowns to match. Treat as a satellite, not a core position.

Figures are illustrative for editorial purposes. Past performance does not guarantee future results.

Holdings

TickerNameWeight
CCJCameco Corporation9.0%
CEGConstellation Energy9.0%
VSTVistra Corp7.0%
URA.AXPaladin Energy4.0%
DNNDenison Mines3.0%
NXENexGen Energy5.0%
UECUranium Energy Corp3.0%
LEUCentrus Energy6.0%
BWXTBWX Technologies6.0%
OKLOOklo Inc4.0%
SMRNuScale Power4.0%
NNENano Nuclear Energy2.0%
URNMSprott Uranium Miners ETF4.0%
KAP.ILKazatomprom7.0%
9501.TTokyo Electric Power4.0%
EDF.PAElectricite de France5.0%
PCGPG&E Corporation4.0%
DUKDuke Energy4.0%
AEPAmerican Electric Power4.0%
EXCExelon Corporation6.0%

Risks

  • Uranium spot moves can swing miner weights by 30%+ inside a single rebalance window.
  • SMR developers are largely pre-revenue, so their inclusion adds binary technology risk.
  • Regulatory and political risk varies sharply by country, France and the US run different rulebooks.

Earlier weeks

Arithmos · investment research & data tool · not investment advice · past performance does not guarantee future results.
Investment research & data tool · not investment advice · not a regulated broker or advisor · past performance does not guarantee future results.