Hong Kong

Top 5 largest HK Companies in the Oil & Gas E&P industry by Market Cap

This is the list of the largest public listed companies in the Oil & Gas E&P industry from Hong Kong by market capitalization with links to their reference stock.

Hong Kong Oil & Gas E&P Industry Analysis
Top HK Companies Hong Kong Analysis
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Top Oil & Gas E&P Companies from Hong Kong as of Jul. 01, 2025

Rank Company Market Cap (USD) Country Sector Industry
1 CNOOC Limited $114.34 B Hong Kong HK Energy HK Oil & Gas E&P
2 United Energy Group Ltd $1.70 B Hong Kong HK Energy HK Oil & Gas E&P
3 AAG Energy Holdings Ltd $792.8 M

(July 1, 2023)

 Hong Kong HK Energy HK Oil & Gas E&P
4 IDG Energy Investment Ltd $196.4 M Hong Kong HK Energy HK Oil & Gas E&P
5 Polyard Petroleum International Group Ltd $78.1 M

(Jan. 1, 2024)

 Hong Kong HK Energy HK Oil & Gas E&P

Top Oil & Gas E&P Companies from Hong Kong as of Jul. 01, 2025

1. CNOOC

Company Profile: CNOOC Limited
Market Cap (USD): $114.34 B
Country: Hong Kong
Sector: HK Energy
Industry: HK Oil & Gas E&P

2. United Energy Group Ltd

Company Profile: United Energy Group Ltd
Market Cap (USD): $1.70 B
Country: Hong Kong
Sector: HK Energy
Industry: HK Oil & Gas E&P

3. AAG Energy Holdings Ltd

Company Profile: AAG Energy Holdings Ltd
Market Cap (USD): $792.8 M (July 1, 2023)
Country: Hong Kong
Sector: HK Energy
Industry: HK Oil & Gas E&P

4. IDG Energy Investment Ltd

Company Profile: IDG Energy Investment Ltd
Market Cap (USD): $196.4 M
Country: Hong Kong
Sector: HK Energy
Industry: HK Oil & Gas E&P

5. Polyard Petroleum International Group Ltd

Company Profile: Polyard Petroleum International Group Ltd
Market Cap (USD): $78.1 M (Jan. 1, 2024)
Country: Hong Kong
Sector: HK Energy
Industry: HK Oil & Gas E&P

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