Billionaire Investments Generate 486 Million Tonnes of CO2
Oxfam finds the 1,000 richest billionaires' holdings produced emissions rivaling a top-20 greenhouse gas-emitting nation in 2025.
Updated on Nov. 3, 2026 in Environmental
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Oxfam reported that investments held by the 1,000 richest billionaires generated 486 million tonnes of carbon dioxide in 2025. The figure would rank those holdings as the world's 19th-largest greenhouse gas emitter if they were a country.
Why it matters
The analysis ties concentrated wealth to climate-driven floods, fires, droughts and food crises, while billionaires build private shelters with their own food, water and renewable power. Benefits of these preparations remain private rather than extending to surrounding communities.
Oxfam's calculation attributes 486 million tonnes of CO2 in 2025 to investments held by the 1,000 richest billionaires, with 71% of those investments in high-emission industries. The extraction does not detail how the emissions were apportioned across holdings, and the projected 1.9 million excess heat deaths is a forward estimate rather than a measured outcome.
The players
Oxfam
Oxfam is an international confederation of charitable organizations focused on alleviating global poverty and inequality, which conducted the emissions analysis.
The details
Oxfam calculated the emissions from the investments of the 1,000 richest billionaires. Separately, billionaires are acquiring islands and building fortified bunkers with dedicated food, water and renewable power as protection against climate disasters.
Timeline
2025: Billionaire investments generated 486 million tonnes of CO2.
2050: Roughly one in 10 people worldwide could face climate-related displacement.
Environmental Inequality
This analysis extends Oxfam's recurring research connecting extreme wealth to carbon emissions, shifting attention from national emissions totals to the portfolios of individual billionaires. It frames climate vulnerability as increasingly divided between those able to buy private protection and populations facing displacement.
The analysis points to a future in which climate-related displacement could affect roughly one in 10 people by 2050, and in which homes may become unaffordable or uninsurable for some. Readers facing rising insurance costs or mortgage barriers in climate-exposed areas face the most direct consequences.
The takeaway
Climate risk is increasingly shaped by who can afford protection, with the costs of emissions and the benefits of adaptation distributed unevenly. Tracking how investment portfolios contribute to emissions can clarify where accountability lies.
Further reading
Explore more reporting in the Environmental section for broader context on climate impacts.
Source note: This article includes information reported by The Cool Down.
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