Happiness World Holdings Limited, an investment holding company, engages in the exploration, development, production, and drilling activities of oil and gas in Singapore and Thailand. The company operates through two segments, Oil and Gas and Investment and Trading. The company holds 20% interest in three producing concessions, including SW1, L44/43, and L33/43 located in Phetchabun Basin, Thailand. It invests in private equity deals, pre-initial and initial public offerings, and fixed income and hybrid instruments; and trades in equities, commodities, and other financial instruments. The company was formerly known as CapAllianz Holdings Limited and changed its name to Happiness World Holdings Limited in October 2026. The company was incorporated in 1999 and is based in Singapore.