The surge in oil prices over the last year must have helped it a lot. This is evidenced by the fact that the 4 out of the top 6 companies in the world are all O&G companies (Exxon, Shell, BP, and Chevron). However, PETRONAS's revenue of $44 billion is puny when compared to Exxon's $339 billion.
Incidentally, PETRONAS is also the only company from South East Asia represented in the top 50 Asian companies. The rest of the large Asian companies are mainly Japanese, Korean and Chinese. The only other SEA company listed is Flextronics (433rd, $15 billion) from Spore.
In terms of industry, PETRONAS is ranked as the 20th largest O&G company in the world. And surprisingly, it's the largest O&G company from an Islamic country. All the other Islamic countries must have JVs with the other big companies instead of nationalising their resources like we did.
But that's not the most important tid bit. The most important thing is that it's total revenues for last year were about $44 billion. Now, we see why the Iran deal is so important for Malaysia. It worth more than 1/3 of the whole of PETRONAS's revenues last year. I wouldn't give up that kind of a deal for the world! It's just plain illogical if they do. So, we can kiss the FTA deal with the US goodbye then.
Just a quick run down of other interesting companies. Intel was the largest semicon company (144th, $38 billion). The top 10 companies in the UK are mainly banks, and financial services. IBM is the largest tech company (29th,$91 billion). Coca-cola maintains it's position as the world's largest beverage company (267th, $23 billion). Apple barely made it onto the list (492th, $13 billion). HP (33rd, $86 billion) is kicking Dell (88th, $55billion) down.