Nuclear Atlas
Weekly digest
Companies · data

The companies behind the fuel and the fleet

Two tables, one row per company: 46 on the uranium side, from producers and developers to royalty and physical-uranium vehicles and enrichers, and 61 on the nuclear side, from fleet owners and SMR developers to reactor vendors, fuel fabricators and suppliers. Each row gives the segment, the headquarters, the primary listing, a market-cap snapshot with its date and source, and the latest production or the operated fleet. Sort any column; the company name opens its page.

Market panel

Four companies from the table and three exchange-traded funds that track uranium miners, one pane each. A pane shows the dataset's dated snapshot; a TradingView chart loads only when you press Show chart.

Cameco Corporation

CompanyTSX: CCOcompany page

TradingView symbol: TSX:CCO
Market cap, USD
37.9 bn USDas of 8 Oct 2026 · stockanalysis.com
Market cap, local
n/a

Cameco CorporationTSX:CCO

Chart: TradingView, the same free embedded chart at the size of this view, with TradingView's prices under TradingView's terms; not part of the atlas dataset. Escape or Close returns to the page.

Chart: TradingView. The free embedded chart for TSX:CCO loads from tradingview.com only when you press Show chart (needs JavaScript); it shows TradingView's prices under TradingView's terms and is not part of the atlas dataset. Expand opens the same chart in a larger view. While no chart is loaded, the figure shows the atlas dataset's dated snapshot instead.

Symbol: checked on TradingView, 10 Oct 2026. Primary listing (TSX:CCO); verified via symbol page and screener, 10 Oct 2026; screener names it 'Cameco Corporation' (stock).

National Atomic Company Kazatomprom JSC

CompanyLSE: KAPcompany page

TradingView symbol: OTC:NATKY
Market cap, USD
17.16 bn USDas of 1 Oct 2026 · stockanalysis.com
Market cap, local
12.83 bn GBPas of 8 Oct 2026 · stockanalysis.com

National Atomic Company Kazatomprom JSCOTC:NATKY

Chart: TradingView, the same free embedded chart at the size of this view, with TradingView's prices under TradingView's terms; not part of the atlas dataset. Escape or Close returns to the page.

Chart: TradingView. The free embedded chart for OTC:NATKY loads from tradingview.com only when you press Show chart (needs JavaScript); it shows TradingView's prices under TradingView's terms and is not part of the atlas dataset. Expand opens the same chart in a larger view. While no chart is loaded, the figure shows the atlas dataset's dated snapshot instead.

Symbol: checked on TradingView, 10 Oct 2026. Not the primary listing: the first listing TradingView carries (OTC:NATKY); verified via symbol page and screener, 10 Oct 2026; screener names it 'National Atomic Company Kazatomprom JSC Sponsored GDR RegS' (dr); LSE:KAP symbol page answered 404; KASE:KZAP symbol page answered 404; AIX:KAP symbol page answered 404.

The chart uses the OTC ADR line (OTC:NATKY): TradingView does not carry the LSE GDR line (LSE:KAP answered 404 on 10 Oct 2026).

Sprott Physical Uranium Trust

Physical uranium trustTSX: U.UNcompany page

TradingView symbol: TSX:U.UN
Market cap, USD
n/a
Market cap, local
9.52 bn CADas of 8 Oct 2026 · finance.yahoo.com

Sprott Physical Uranium TrustTSX:U.UN

Chart: TradingView, the same free embedded chart at the size of this view, with TradingView's prices under TradingView's terms; not part of the atlas dataset. Escape or Close returns to the page.

Chart: TradingView. The free embedded chart for TSX:U.UN loads from tradingview.com only when you press Show chart (needs JavaScript); it shows TradingView's prices under TradingView's terms and is not part of the atlas dataset. Expand opens the same chart in a larger view. While no chart is loaded, the figure shows the atlas dataset's dated snapshot instead.

Symbol: checked on TradingView, 10 Oct 2026. Primary listing (TSX:U.UN); verified via symbol page and screener, 10 Oct 2026; screener names it 'Sprott Physical Uranium Trust' (fund).

Yellow Cake plc

Physical uranium trustAIM: YCAcompany page

TradingView symbol: LSE:YCA
Market cap, USD
1.81 bn USDas of 6 Oct 2026 · stockanalysis.com
Market cap, local
n/a

Yellow Cake plcLSE:YCA

Chart: TradingView, the same free embedded chart at the size of this view, with TradingView's prices under TradingView's terms; not part of the atlas dataset. Escape or Close returns to the page.

Chart: TradingView. The free embedded chart for LSE:YCA loads from tradingview.com only when you press Show chart (needs JavaScript); it shows TradingView's prices under TradingView's terms and is not part of the atlas dataset. Expand opens the same chart in a larger view. While no chart is loaded, the figure shows the atlas dataset's dated snapshot instead.

Symbol: checked on TradingView, 10 Oct 2026. Primary listing (AIM:YCA); verified via symbol page and screener, 10 Oct 2026; screener names it 'Yellow Cake Plc' (stock).

Global X Uranium ETF

Exchange-traded fundGlobal X ETFsNYSE Arca: URAlisting per Global X ETFs fund page, as of 8 Oct 2026

TradingView symbol: AMEX:URA
Net assets, USD
5.5 bn USDas of 9 Oct 2026 · globalxetfs.com
Market cap
n/a · a fund, not a company; net assets are the comparable figure

Global X Uranium ETFAMEX:URA

Chart: TradingView, the same free embedded chart at the size of this view, with TradingView's prices under TradingView's terms; not part of the atlas dataset. Escape or Close returns to the page.

Chart: TradingView. The free embedded chart for AMEX:URA loads from tradingview.com only when you press Show chart (needs JavaScript); it shows TradingView's prices under TradingView's terms and is not part of the atlas dataset. Expand opens the same chart in a larger view. While no chart is loaded, the figure shows the atlas dataset's dated snapshot instead.

Symbol: checked on TradingView, 10 Oct 2026. Verified via screener; screener names it 'Global X Uranium ETF' (fund).

stockanalysis.com showed assets of USD 5.68 billion on 10 Oct 2026 (cross-check, different cut-off).

Sprott Uranium Miners ETF

Exchange-traded fundSprott Asset ManagementNYSE Arca: URNMlisting per Sprott Asset Management fund page

TradingView symbol: AMEX:URNM
Net assets, USD
1.82 bn USDas of 9 Oct 2026 · sprottetfs.com
Market cap
n/a · a fund, not a company; net assets are the comparable figure

Sprott Uranium Miners ETFAMEX:URNM

Chart: TradingView, the same free embedded chart at the size of this view, with TradingView's prices under TradingView's terms; not part of the atlas dataset. Escape or Close returns to the page.

Chart: TradingView. The free embedded chart for AMEX:URNM loads from tradingview.com only when you press Show chart (needs JavaScript); it shows TradingView's prices under TradingView's terms and is not part of the atlas dataset. Expand opens the same chart in a larger view. While no chart is loaded, the figure shows the atlas dataset's dated snapshot instead.

Symbol: checked on TradingView, 10 Oct 2026. Verified via screener; screener names it 'Sprott Uranium Miners ETF' (fund).

stockanalysis.com showed assets of USD 1.90 billion on 10 Oct 2026 (cross-check, different cut-off).

Sprott Junior Uranium Miners ETF

Exchange-traded fundSprott Asset ManagementNasdaq: URNJlisting per Sprott Asset Management fund page

TradingView symbol: NASDAQ:URNJ
Net assets, USD
300.33 m USDas of 9 Oct 2026 · sprottetfs.com
Market cap
n/a · a fund, not a company; net assets are the comparable figure

Sprott Junior Uranium Miners ETFNASDAQ:URNJ

Chart: TradingView, the same free embedded chart at the size of this view, with TradingView's prices under TradingView's terms; not part of the atlas dataset. Escape or Close returns to the page.

Chart: TradingView. The free embedded chart for NASDAQ:URNJ loads from tradingview.com only when you press Show chart (needs JavaScript); it shows TradingView's prices under TradingView's terms and is not part of the atlas dataset. Expand opens the same chart in a larger view. While no chart is loaded, the figure shows the atlas dataset's dated snapshot instead.

Symbol: checked on TradingView, 10 Oct 2026. Verified via screener; screener names it 'Sprott Junior Uranium Miners ETF' (fund).

stockanalysis.com showed assets of USD 323.65 million on 10 Oct 2026 (cross-check, different cut-off).

Instruments, symbols and fund snapshots: market_panel.json, as of 10 Oct 2026; company names, listings and market-cap snapshots: the company datasets, each figure with its own date and quote page. TradingView symbols were checked on TradingView's public symbol page or symbol screener on the date each record states; each pane says which.
Sort by any column heading; n/a rows stay last.

Uranium

Uranium companies, one row per company, sorted by market cap
CamecoCameco CorporationProducerSaskatoon, CANTSX:CCO37.9 bn USDstockanalysis.com, 8 Oct 202621 Mlb U3O82025, Cameco share (8,078 tU)
KazatompromNational Atomic Company Kazatomprom JSCProducerAstana, KAZLSE:KAP17.16 bn USDstockanalysis.com, 1 Oct 202625,839 tU2025, 100% basis (67.18 Mlb U3O8); attributable 35.15 Mlb U3O8
NexGenNexGen Energy Ltd.DeveloperVancouver, CANTSX:NXE5.81 bn USDstockanalysis.com, 8 Oct 2026n/a
UECUranium Energy Corp.ProducerCorpus Christi, TX, USANYSE American:UEC4.53 bn USDstockanalysis.com, 8 Oct 2026229,294 lb U3O8 precipitated + dried/drummed2026, fiscal 2026 (year ended 2026-07-31)
PaladinPaladin Energy LtdProducerPerth, AUSASX:PDN3.31 bn USDstockanalysis.com, 11 Sep 20264.82 Mlb U3O82026, Langer Heinrich, FY2026 (year ended 2026-06-30)
CentrusCentrus Energy Corp.EnricherBethesda, MD, USANYSE:LEU2.91 bn USDstockanalysis.com, 8 Oct 2026n/a
Energy FuelsEnergy Fuels Inc.ProducerLakewood, CO, USANYSE American:UUUU2.48 bn USDstockanalysis.com, 8 Oct 20261 Mlb finished U3O8 at White Mesa Mill2025 ('more than one million pounds'); >1.6 Mlb mined
DenisonDenison Mines Corp.DeveloperToronto, CANTSX:DML2.14 bn USDstockanalysis.com, 8 Oct 2026n/a
Yellow CakeYellow Cake plcPhysical trustSaint Helier, JEYAIM:YCA1.81 bn USDstockanalysis.com, 6 Oct 2026n/a
URCUranium Royalty Corp.RoyaltyVancouver, CANTSX:URC1.6 bn USDstockanalysis.com, 7 Oct 2026n/a
SilexSilex Systems LimitedTechnologySydney (Lucas Heights), AUSASX:SLX928.59 m USDstockanalysis.com, 11 Sep 2026n/a
Deep YellowDeep Yellow LimitedDeveloperPerth, AUSASX:DYL926.39 m USDstockanalysis.com, 18 Sep 2026n/a
IsoEnergyIsoEnergy Ltd.DeveloperToronto, CANTSX:ISO678.72 m USDstockanalysis.com, 6 Oct 2026n/a
BannermanBannerman Energy LtdDeveloperSubiaco, AUSASX:BMN562.72 m USDstockanalysis.com, 5 Oct 2026n/a
Boss EnergyBoss Energy LimitedProducerSubiaco, AUSASX:BOE454.54 m USDstockanalysis.com, 28 Sep 2026349,188 lb U3O8 drummed at Honeymoon2025, June 2025 quarter (FY2026 guidance 1.6 Mlb; FY2026 actuals reported 2026-07/08 not retrieved)
Ur-EnergyUr-Energy Inc.ProducerLittleton, CO, USANYSE American:URG405.12 m USDstockanalysis.com, 8 Oct 2026410,440 lb U3O8 drummed2025 (dried and packaged) at Lost Creek, 2025; 370,893 lb captured
enCoreenCore Energy Corp.ProducerDallas, TX, USANASDAQ:EU198.75 m USDstockanalysis.com, 8 Oct 2026699,807 lb U3O8 extracted2025, calendar 2025
Global AtomicGlobal Atomic CorporationDeveloperToronto, CANTSX:GLO191.67 m USDstockanalysis.com, 10 Sep 2026n/a
F3 UraniumF3 Uranium Corp.ExplorerKelowna, CANTSXV:FUU65.73 m USDstockanalysis.com, 24 Jul 2026n/a
AnfieldAnfield Energy Inc.DeveloperVancouver, CANNASDAQ:AEC65.49 m USDstockanalysis.com, 8 Oct 2026n/a
Western U&VWestern Uranium & Vanadium Corp.DeveloperToronto, CANCSE:WUC26.67 m USDstockanalysis.com, 18 Sep 2026n/a
CGN MiningCGN Mining Company LimitedProducerHong Kong, HKGHKEX:116416.53 bn HKDstockanalysis.com, 22 Sep 2026n/a
SPUTSprott Physical Uranium TrustPhysical trustToronto, CANTSX:U.UN9.52 bn CADfinance.yahoo.com, 8 Oct 2026n/a
ATHAATHA Energy Corp.ExplorerVancouver, CANTSXV:SASK434.85 m CADstockanalysis.com, 4 Sep 2026n/a
LaramideLaramide Resources Ltd.DeveloperToronto, CANTSX:LAM144.79 m CADstockanalysis.com, 15 Jul 2026n/a
SkyharbourSkyharbour Resources Ltd.ExplorerVancouver, CANTSXV:SYH104.01 m CADstockanalysis.com, 4 Sep 2026n/a
Asarian (ex-Forsys)Asarian Energy Limited (formerly Forsys Metals Corp.)DeveloperToronto, CANTSX:ARN100.34 m CADstockanalysis.com, 8 Oct 2026n/a
CanAlaskaCanAlaska Uranium Ltd.ExplorerSaskatoon, CANTSXV:CVV83.98 m CADstockanalysis.com, 4 Sep 2026n/a
CosaCosa Resources Corp.ExplorerVancouver, CANTSXV:COSA62.92 m CADstockanalysis.com, 24 Sep 2026n/a
Premier American UraniumPremier American Uranium Inc.ExplorerToronto, CANTSXV:PUR40.17 m CADstockanalysis.com, 5 Oct 2026n/a
StallionStallion Uranium Corp.ExplorerVancouver, CANTSXV:STUD34.53 m CADstockanalysis.com, 24 Sep 2026n/a
PurepointPurepoint Uranium Group Inc.ExplorerToronto, CANTSXV:PTU23.38 m CADstockanalysis.com, 2 Oct 2026n/a
Geiger (ex-Baselode)Geiger Energy Corporation (formerly Baselode Energy Corp.)ExplorerToronto, CANTSXV:BEEP21.15 m CADstockanalysis.com, 23 Sep 2026n/a
Standard UraniumStandard Uranium Ltd.ExplorerVancouver, CANTSXV:STND11.98 m CADstockanalysis.com, 10 Jul 2026n/a
AlligatorAlligator Energy LimitedExplorerUnley, AUSASX:AGE178.85 m AUDstockanalysis.com, 2 Oct 2026n/a
PeninsulaPeninsula Energy LimitedProducerSubiaco, AUSASX:PEN145.71 m AUDstockanalysis.com, 14 Sep 2026n/a
ElevateElevate Uranium LtdExplorerWest Perth, AUSASX:EL8122.37 m AUDstockanalysis.com, 7 Sep 2026n/a
LotusLotus Resources LimitedProducerPerth, AUSASX:LOT114.88 m AUDstockanalysis.com, 5 Oct 2026n/a
AuraAura Energy LimitedDeveloperFremantle, AUSASX:AEE93.61 m AUDfinance.yahoo.com, 9 Oct 2026n/a
ToroToro Energy LimitedDeveloperWest Perth, AUSAcquired, delisted66.16 m AUDlast trade before delisting, stockanalysis.com, 16 Jun 2026n/a
UrencoUrenco LtdEnricherStoke Poges, GBRPrivate, unlistedn/ano listingn/a
Uranium OneUranium One Group (Rosatom)State entityMoscow, RUSState-owned, unlistedn/ano listing5,829 tU2024 (WNA company table, 2024)
OranoOrano SAState entityChâtillon, FRAState-owned, unlistedn/ano listing6,815 tU2024 (WNA company table, 2024)
NavoiyuranNavoiyuran State Enterprise (Navoi Mining & Metallurgical Co. uranium arm)State entityNavoi, UZBState-owned, unlistedn/ano listing4,000 tU2024 (WNA company table, 2024; rounded)
FissionFission Uranium Corp.DeveloperKelowna, CANAcquired, delistedn/ano listingn/a
Atomic Eagle (ex-GoviEx)Atomic Eagle Limited (formerly GoviEx Uranium Inc.)Developern/a, AUSASX:AEUn/anot capturedn/a

Source: data/companies_uranium.json, as of 10 Oct 2026, 46 records, built from stockanalysis.com quote pages (market cap, listing, description); World Nuclear Association - World Uranium Mining Production; World Nuclear News - Cameco, Kazatomprom release 2025 production figures; Company websites and news releases (see each record's source_url); Yahoo Finance quote pages (AEE.AX, U-UN.TO, PEN.AX); Newsfile Corp releases (Geiger Energy name change); Crux Investor articles (IsoEnergy-Toro; Baselode-Forum; Peninsula guidance). Each market cap is a snapshot of the quote page linked in its row, on the date shown.

Known gaps of the dataset
  • Boss Energy FY2026 actual production and FY2027 guidance (ASX release 27 Aug 2026) located but not retrieved; production_latest is the June 2025 quarter.
  • Lotus Resources and Peninsula Energy: actual lb produced not retrieved (production_latest null).
  • No dated ASX:AEU market cap for Atomic Eagle (ex-GoviEx); TSXV:GXU status unconfirmed.
  • Centrus Energy exchange venue (NYSE vs NYSE American) not confirmed from a primary filing.
  • Kazatomprom AIX ticker, Deep Yellow/Bannerman NSX codes, Aura AIM ticker: from general knowledge, flagged in listing notes.
  • Resource/reserve figures missing for NexGen, Global Atomic, Bannerman, Laramide (Westmoreland), ATHA (Angilak), Alligator (Samphire).
  • Market caps for several ASX/TSXV names come from delayed quotes dated July-September 2026 (see market_cap_*_as_of).
  • Reference state entities (Orano, Uranium One, Navoiyuran, Urenco) use WNA 2024 production; 2025 company figures not fetched.
  • Fission Uranium completion date (Dec 2024) from the project brief, not re-verified.
  • Fiscal year ends for most TSXV juniors not verified (null).
  • TradingView: every listed record has a verified symbol. Kazatomprom's LSE GDR line (LSE:KAP) and Uranium Royalty's TSX line (TSX:URC) are not on TradingView (symbol pages 404, screener no match, 10 Oct 2026), so those charts use OTC:NATKY and NASDAQ:UROY.

Nuclear, fuel and SMR

Nuclear, fuel and SMR companies, one row per company, sorted by market cap
GE VernovaGE Vernova Inc.Reactor vendorCambridge, MA, USANYSE:GEV266.16 bn USDstockanalysis.com, 8 Oct 2026n/a
NextEraNextEra Energy, Inc.Utility, fleet ownerJuno Beach, FL, USANYSE:NEE161.39 bn USDstockanalysis.com, 8 Oct 20267 units, 6,054 MWeworld-nuclear.org, 9 Oct 2026
ConstellationConstellation Energy CorporationUtility, fleet ownerBaltimore, MD, USANASDAQ:CEG101.0 bn USDstockanalysis.com, 8 Oct 202621 units, 21,479 MWeworld-nuclear.org, 9 Oct 2026
Southern Co.The Southern CompanyUtility, fleet ownerAtlanta, GA, USANYSE:SO99.1 bn USDstockanalysis.com, 8 Oct 20268 units, 8,052 MWeworld-nuclear.org, 9 Oct 2026
Duke EnergyDuke Energy CorporationUtility, fleet ownerCharlotte, NC, USANYSE:DUK91.1 bn USDstockanalysis.com, 8 Oct 202611 units, 10,755 MWeworld-nuclear.org, 9 Oct 2026
DominionDominion Energy, Inc.Utility, fleet ownerRichmond, VA, USANYSE:D54.31 bn USDstockanalysis.com, 8 Oct 20266 units, 5,647 MWeworld-nuclear.org, 9 Oct 2026
VistraVistra Corp.Utility, fleet ownerIrving, TX, USANYSE:VST52.41 bn USDstockanalysis.com, 8 Oct 20266 units, 6,347 MWeworld-nuclear.org, 9 Oct 2026
EntergyEntergy CorporationUtility, fleet ownerNew Orleans, LA, USANYSE:ETR48.72 bn USDstockanalysis.com, 8 Oct 20265 units, 5,360 MWeworld-nuclear.org, 9 Oct 2026
PG&EPG&E CorporationUtility, fleet ownerOakland, CA, USANYSE:PCG27.9 bn USDstockanalysis.com, 8 Oct 20262 units, 2,256 MWeworld-nuclear.org, 9 Oct 2026
Curtiss-WrightCurtiss-Wright CorporationComponent supplierDavidson, NC, USANYSE:CW18.74 bn USDstockanalysis.com, 8 Oct 2026n/a
TalenTalen Energy CorporationUtility, fleet ownerHouston, TX, USANASDAQ:TLN17.21 bn USDstockanalysis.com, 8 Oct 20262 units, 2,514 MWeworld-nuclear.org, 9 Oct 2026
KEPCOKorea Electric Power CorporationUtility, fleet ownerNaju, KORKRX:01576013.63 bn USDstockanalysis.com, 8 Oct 2026n/a
BWXTBWX Technologies, Inc.Reactor vendorLynchburg, VA, USANYSE:BWXT13.03 bn USDstockanalysis.com, 8 Oct 2026n/a
FluorFluor CorporationServicesIrving, TX, USANYSE:FLR6.82 bn USDstockanalysis.com, 8 Oct 2026n/a
OkloOklo Inc.SMR developerSanta Clara, CA, USANYSE:OKLO6.43 bn USDstockanalysis.com, 8 Oct 2026n/a
X-energyX-Energy, Inc.SMR developerRockville, MD, USANASDAQ:XE5.6 bn USDstockanalysis.com, 8 Oct 2026n/a
MirionMirion Technologies, Inc.ServicesAtlanta, GA, USANYSE:MIR3.99 bn USDstockanalysis.com, 8 Oct 2026n/a
NuScaleNuScale Power CorporationSMR developerPortland, OR, USANYSE:SMR3.15 bn USDstockanalysis.com, 8 Oct 2026n/a
NANO NuclearNANO Nuclear Energy Inc.SMR developerNew York, NY, USANASDAQ:NNE819.43 m USDstockanalysis.com, 8 Oct 2026n/a
Terrestrial EnergyTerrestrial Energy Inc.SMR developerCharlotte, NC, USANASDAQ:IMSR360.18 m USDstockanalysis.com, 8 Oct 2026n/a
LightbridgeLightbridge CorporationFuel fabricatorReston, VA, USANASDAQ:LTBR211.77 m USDstockanalysis.com, 8 Oct 2026n/a
Doosan EnerbilityDoosan Enerbility Co., Ltd.Component supplierChangwon, KORKRX:03402054,260.0 bn KRWstockanalysis.com, 18 Sep 2026n/a
Hyundai E&CHyundai Engineering & Construction Co., Ltd.ServicesSeoul, KORKRX:00072013,080.0 bn KRWstockanalysis.com, 29 Sep 2026n/a
HitachiHitachi, Ltd.Reactor vendorTokyo, JPNTSE:650125,410.0 bn JPYstockanalysis.com, 9 Oct 2026n/a
MHIMitsubishi Heavy Industries, Ltd.Reactor vendorTokyo, JPNTSE:701112,750.0 bn JPYstockanalysis.com, 30 Sep 2026n/a
CGN PowerCGN Power Co., Ltd.Utility, fleet ownerShenzhen, CHNHKEX:1816235.26 bn HKDstockanalysis.com, 4 Sep 202628 units, 31,838 MWestockanalysis.com, 31 Dec 2025
Rolls-Royce SMRRolls-Royce Holdings plc (Rolls-Royce SMR Ltd)SMR developerLondon, GBRLSE:RR.122.14 bn GBPstockanalysis.com, 2 Oct 2026n/a
IberdrolaIberdrola, S.A.Utility, fleet ownerBilbao, ESPBME:IBE136.94 bn EURstockanalysis.com, 8 Oct 20261 unit, 1,064 MWeworld-nuclear.org, 9 Oct 2026
EngieENGIE SA (Electrabel)Utility, fleet ownerCourbevoie (La Défense), FRAEPA:ENGI57.61 bn EURstockanalysis.com, 22 Sep 20262 units, 2,056 MWeworld-nuclear.org, 9 Oct 2026
FortumFortum OyjUtility, fleet ownerEspoo, FINHEL:FORTUM22.02 bn EURstockanalysis.com, 18 Sep 20262 units, 1,014 MWeworld-nuclear.org, 9 Oct 2026
ČEZČEZ, a. s.Utility, fleet ownerPrague, CZEPSE:CEZ745.63 bn CZKstockanalysis.com, 28 Aug 20266 units, 3,972 MWeworld-nuclear.org, 9 Oct 2026
CNNPChina National Nuclear Power Co., Ltd.Utility, fleet ownerBeijing, CHNSSE:601985181.65 bn CNYstockanalysis.com, 30 Sep 202626 units, 25,000 MWestockanalysis.com, 31 Dec 2025
AtkinsRéalisAtkinsRéalis Group Inc. (Candu Energy)Reactor vendorMontreal, CANTSX:ATRL14.6 bn CADstockanalysis.com, 5 Aug 2026n/a
WestinghouseWestinghouse Electric Company LLCReactor vendorCranberry Township, PA, USAPrivate, unlistedn/ano listingn/a
VattenfallVattenfall ABUtility, fleet ownerSolna, SWEState-owned, unlistedn/ano listing5 units, 5,613 MWeworld-nuclear.org, 9 Oct 2026
Valar AtomicsValar Atomics, Inc.SMR developerEl Segundo, CA, USAPrivate, unlistedn/ano listingn/a
USNCUltra Safe Nuclear Corporation (bankrupt; assets sold 2025)SMR developerSeattle, WA, USABankrupt, assets soldn/ano listingn/a
TVATennessee Valley AuthorityUtility, fleet ownerKnoxville, TN, USAState-owned, unlistedn/ano listing7 units, 8,222 MWeworld-nuclear.org, 9 Oct 2026
ThorizonThorizon B.V.SMR developerAmsterdam, NLDPrivate, unlistedn/ano listingn/a
TerraPowerTerraPower, LLCSMR developerBellevue, WA, USAPrivate, unlistedn/ano listingn/a
Steady EnergySteady Energy OySMR developerHelsinki, FINPrivate, unlistedn/ano listingn/a
Standard NuclearStandard Nuclear, Inc.Fuel fabricatorn/a, USAPrivate, unlistedn/ano listingn/a
Saltfoss (ex-Seaborg)Saltfoss Energy ApS (formerly Seaborg Technologies)SMR developerCopenhagen, DNKPrivate, unlistedn/ano listingn/a
RosatomState Atomic Energy Corporation Rosatom (Rosenergoatom)State entityMoscow, RUSState-owned, unlistedn/ano listing34 units, 27,969 MWeworld-nuclear.org, 9 Oct 2026
RadiantRadiant Industries, Inc.SMR developerEl Segundo, CA, USAPrivate, unlistedn/ano listingn/a
OPGOntario Power Generation Inc.Utility, fleet ownerToronto, CANState-owned, unlistedn/ano listing8 units, 5,576 MWeworld-nuclear.org, 9 Oct 2026
newcleonewcleo LtdSMR developerLondon, GBRPrivate, unlistedn/ano listingn/a
MoltexMoltex Energy Ltd (in administration; assets to Nuclea Energy)SMR developerLondon, GBRIn administrationn/ano listingn/a
Last EnergyLast Energy, Inc.SMR developerWashington, DC, USAPrivate, unlistedn/ano listingn/a
KHNPKorea Hydro & Nuclear Power Co., Ltd.Utility, fleet ownerGyeongju, KORState-owned, unlistedn/ano listing26 units, 25,609 MWeworld-nuclear.org, 9 Oct 2026
Kairos PowerKairos Power LLCSMR developerAlameda, CA, USAPrivate, unlistedn/ano listingn/a
HoltecHoltec InternationalSMR developerJupiter, FL, USAPrivate, unlistedn/ano listingn/a
General MatterGeneral Matter, Inc.EnricherSan Francisco, CA, USAPrivate, unlistedn/ano listingn/a
FramatomeFramatome SASFuel fabricatorCourbevoie, FRAPrivate, unlistedn/ano listingn/a
EDFÉlectricité de France SA (EDF)Utility, fleet ownerParis, FRAState-owned, unlistedn/ano listing57 units, 63,000 MWeworld-nuclear.org, 9 Oct 2026
Deep FissionDeep Fission, Inc.SMR developerBerkeley, CA, USAUnlisted, public reportingn/ano listingn/a
Copenhagen AtomicsCopenhagen Atomics A/SSMR developerCopenhagen, DNKPrivate, unlistedn/ano listingn/a
Bruce PowerBruce Power L.P.Utility, fleet ownerTiverton, ON, CANPrivate, unlistedn/ano listing8 units, 6,478 MWeworld-nuclear.org, 9 Oct 2026
BlykallaBlykalla ABSMR developerStockholm, SWEPrivate, unlistedn/ano listingn/a
ARC Clean TechnologyARC Clean Technology Canada Inc.SMR developerSaint John, NB, CANPrivate, unlistedn/ano listingn/a
Aalo AtomicsAalo Atomics, Inc.SMR developerAustin, TX, USAPrivate, unlistedn/ano listingn/a

Source: data/companies_nuclear.json, as of 9 Oct 2026, 61 records, built from stockanalysis.com quote pages (market cap, listing, employees, description); Nuclear Atlas the reactor dataset and the reactor sites dataset (WNA Reactor Database / IAEA PRIS); Nuclear Atlas the SMR projects dataset (WNN, NucNet, ANS, NRC, CNSC, DOE, developer releases - see each project's source_url); viaNexus 'quote' dataset (US-ticker market-cap cross-check only); Company websites and releases (see each record's source_url / latest_documents). Each market cap is a snapshot of the quote page linked in its row, on the date shown.

Known gaps of the dataset
  • Market caps for non-US listings come from delayed stockanalysis quotes dated 5 Aug 2026 (AtkinsRéalis) to 9 Oct 2026; US names are 8 Oct 2026 close (Entergy, Mirion intraday).
  • Fleet facts are derived from the reactor dataset operator strings/site attribution; co-ownership shares (Vogtle, Catawba, Seabrook, Susquehanna, Spanish and Nordic plants) are not deducted.
  • CGN Power and CNNP fleet figures are company-reported (stockanalysis descriptions, as of 31 Dec 2025), not derived from the reactor dataset.
  • Palisades (Holtec) restart status, TMI-1/Crane and Duane Arnold restart years not verified; PRIS still lists the units as shut down.
  • Private developers' funding rounds and valuations deliberately not recorded (no consistent public source).
  • Westinghouse 2025-2026 US-government partnership announcements, Framatome shareholding percentages, Fluor/Doosan stakes in NuScale: not verified this run.
  • Centrus Energy, Cameco (Westinghouse 49%), Urenco and Orano are recorded in companies_uranium.json and intentionally not duplicated here.
  • TradingView: every listed record has a verified symbol; checked 10 Oct 2026 on TradingView's symbol pages and screener (data/raw/tradingview/).

How to read the tables

Segments. Uranium: producer, developer, explorer, royalty, physical trust, enricher, technology and state entity. Nuclear: utility and fleet owner, SMR developer, reactor vendor, fuel fabricator, component supplier, services, enricher and state entity. A state entity is an unlisted state-owned company kept as a reference record.

Listing. A listed company shows its primary exchange and ticker; the other rows say why there is no quote: state-owned and unlisted, private and unlisted, unlisted but filing public reports, acquired and delisted (kept as a pointer to the acquirer), in administration, or bankrupt with the assets sold. An acquired company keeps its last trade before delisting, dated and marked as such in the market-cap column.

Market cap. Delayed snapshots read as displayed on stockanalysis.com quote pages (two uranium rows from Yahoo Finance), each dated per row and linked. A figure is in USD where a USD-quoted page exists, otherwise in the currency of the primary exchange; figures are never converted between currencies, so the sort ranks the USD rows, then the local-currency rows grouped by currency, then the last trades of delisted companies, then the rows without a figure. A live market panel with price, volume and chart is planned; until then no quote is shown, only the dated snapshot in each row.

Market panel and charts. The panel above and each company page carry a TradingView chart that loads only when you press Show chart; until then the page shows the dataset's dated snapshot and nothing is requested from tradingview.com. The chart is TradingView's free embed with its attribution, shown under TradingView's terms, and its prices are not part of the atlas datasets. The TradingView symbol on each record was checked on TradingView's public symbol page or symbol screener on the date the record states (the record's note says which); a company whose exchange TradingView does not carry prints n/a.

Latest production and fleet. Production is the latest figure each company reports, in its own unit (tU, Mlb U3O8 or lb U3O8), so sorting by that column orders the printed numbers, not a common unit. The fleet is the number of operating units and their net MWe operated by the company at full plant capacity, co-ownership shares not deducted, with the source and date beside it.