United States

Top 310 largest US Companies in the Energy sector by Market Cap

This is the list of the largest public listed companies in the Energy sector from the United States by market capitalization with links to their reference stock and industry.

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Top Energy Companies from the United States as of Jan. 01, 2026

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Rank Company Market Cap (USD) Country Sector Industry
241 Freedom Oil and Gas Ltd United States US Energy US Oil & Gas E&P
242 Fremont Petroleum Corporation Ltd United States US Energy US Oil & Gas E&P
243 Alamo Energy Corp United States US Energy US Oil & Gas E&P
244 Gulfport Energy Corporation United States US Energy US Oil & Gas E&P
245 EGPI Firecreek, Inc. United States US Energy US Oil & Gas E&P
246 Energy Revenue America, Inc. United States US Energy US Oil & Gas E&P
247 Eon NRG Limited United States US Energy US Oil & Gas E&P
248 Black Rock Petroleum Company United States US Energy US Oil & Gas E&P
249 Universal Energy Corp United States US Energy US Oil & Gas E&P
250 Mountainview Energy Ltd United States US Energy US Oil & Gas E&P
251 Quest Oil Corp United States US Energy US Oil & Gas E&P
252 Santa Fe Petroleum, Inc. United States US Energy US Oil & Gas E&P
253 Glen Rose Petroleum Corp United States US Energy US Oil & Gas E&P
254 Index Oil & Gas, Inc. United States US Energy US Oil & Gas E&P
255 Silver Star Energy, Inc. United States US Energy US Oil & Gas E&P
256 Soligen Technologies, Inc. United States US Energy US Oil & Gas E&P
257 Hybrid Energy Holdings, Inc. United States US Energy US Oil & Gas E&P
258 Standard Energy Corp United States US Energy US Oil & Gas E&P
259 OMDA Oil and Gas, Inc. United States US Energy US Oil & Gas E&P
260 Dunes Exploration Ltd United States US Energy US Oil & Gas E&P
261 Tradestar Resources Corp United States US Energy US Oil & Gas E&P
262 Devin Energy Corp United States US Energy US Oil & Gas E&P
263 Imperial Resources, Inc. United States US Energy US Oil & Gas E&P
264 Norstra Energy, Inc. United States US Energy US Oil & Gas E&P
265 Wentworth Energy, Inc. United States US Energy US Oil & Gas E&P
266 SC Holdings Corp United States US Energy US Oil & Gas E&P
267 Mondial Ventures, Inc. United States US Energy US Oil & Gas E&P
268 ParaFin Corp United States US Energy US Oil & Gas E&P
269 Nikron Technologies, Inc. United States US Energy US Oil & Gas E&P
270 Trophy Resources, Inc. United States US Energy US Oil & Gas E&P

Top Energy Companies from the United States as of Jan. 01, 2026

241. Freedom Oil and Gas Ltd

Company Profile: Freedom Oil and Gas Ltd
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

242. Fremont Petroleum Corporation Ltd

Company Profile: Fremont Petroleum Corporation Ltd
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

243. Alamo Energy Corp

Company Profile: Alamo Energy Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

244. Gulfport Energy Corporation

Company Profile: Gulfport Energy Corporation
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

245. EGPI Firecreek, Inc.

Company Profile: EGPI Firecreek, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

246. Energy Revenue America, Inc.

Company Profile: Energy Revenue America, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

247. Eon NRG Limited

Company Profile: Eon NRG Limited
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

248. Black Rock Petroleum Company

Company Profile: Black Rock Petroleum Company
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

249. Universal Energy Corp

Company Profile: Universal Energy Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

250. Mountainview Energy Ltd

Company Profile: Mountainview Energy Ltd
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

251. Quest Oil Corp

Company Profile: Quest Oil Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

252. Santa Fe Petroleum, Inc.

Company Profile: Santa Fe Petroleum, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

253. Glen Rose Petroleum Corp

Company Profile: Glen Rose Petroleum Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

254. Index Oil & Gas, Inc.

Company Profile: Index Oil & Gas, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

255. Silver Star Energy, Inc.

Company Profile: Silver Star Energy, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

256. Soligen Technologies, Inc.

Company Profile: Soligen Technologies, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

257. Hybrid Energy Holdings, Inc.

Company Profile: Hybrid Energy Holdings, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

258. Standard Energy Corp

Company Profile: Standard Energy Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

259. OMDA Oil and Gas, Inc.

Company Profile: OMDA Oil and Gas, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

260. Dunes Exploration Ltd

Company Profile: Dunes Exploration Ltd
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

261. Tradestar Resources Corp

Company Profile: Tradestar Resources Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

262. Devin Energy Corp

Company Profile: Devin Energy Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

263. Imperial Resources, Inc.

Company Profile: Imperial Resources, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

264. Norstra Energy, Inc.

Company Profile: Norstra Energy, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

265. Wentworth Energy, Inc.

Company Profile: Wentworth Energy, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

266. SC Holdings Corp

Company Profile: SC Holdings Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

267. Mondial Ventures, Inc.

Company Profile: Mondial Ventures, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

268. ParaFin Corp

Company Profile: ParaFin Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

269. Nikron Technologies, Inc.

Company Profile: Nikron Technologies, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

270. Trophy Resources, Inc.

Company Profile: Trophy Resources, Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas E&P

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