I’ve been following the oil industry for a while, and one thing that’s clear is that the biggest oil company in the world isn’t as straightforward as it seems at first glance. When we look only at revenue numbers, Saudi Aramco comes out ahead, but there’s much more happening in this market.

Recently, I reviewed some data and things are getting interesting. Saudi Aramco remains the largest oil company in the world in terms of production and reserves, with revenue of about 590 billion dollars. But right behind it are Sinopec and PetroChina, both Chinese, with revenues close to 486 billion each. This shows how oil power is distributed globally.

What caught my attention lately is how integrated companies like ExxonMobil, Shell, and Chevron continue to be relevant even with the energy transition underway. ExxonMobil is around 387 billion in revenue, Shell with 365 billion. These giants are able to adapt better because they don’t rely on just one segment.

Now, when you think about which is the biggest oil company in the world for investment, it’s a different story. It’s not just about size; it’s about business sustainability. Many of these companies pay consistent dividends, which attracts conservative investors. But there’s also the volatility of oil prices, which continues to influence everything.

In Brazil, we have Petrobras, which is huge on a regional scale, but when placed in the global context, it’s clear that the biggest oil companies in the world involve much larger players. Still, companies like 3R Petroleum, Prio, and Petroreconcavo have created interesting niches in mature fields.

What I observe is that investing in these oil companies today requires more caution than before. Oil demand is still growing, but more slowly. Prices remain volatile, affected by geopolitics and changes in energy policies. Those looking to enter this market need to understand that it’s no longer a guaranteed growth sector, but rather one of income and relative stability.

For those considering allocating resources, it’s worth watching the larger integrated companies because they have diversified operations. But it’s also important to recognize that the transition to renewable energy is real and will continue to pressure these companies to adapt. The oil market remains important, but it’s in transformation.