Market cap: AU$66.15 billion. As the biggest ASX oil and gas stock by market cap, Woodside Energy Group (ASX: WDS) leads the country in natural gas production and is considered a pioneer in Australia’s liquefied natural gas (LNG) industry. In June 2022, Woodside Petroleum merged with BHP's (ASX: BHP ,NYSE:BHP,LSE:BHP) oil and gas …Oil-stock screen An easy way to play U.S. energy companies as a group is by tracking the 21 stocks in the S&P 500 energy sector, which you can do with the Energy Select Sector SPD