The 20 million Barrels of Oil Conundrum
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The 20 million Barrels of Oil Conundrum

12:26 Mar 11, 2026
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Our analysts Andrew Sheets and Martijn Rats discuss why a prolonged disruption of oil flow through the Strait of Hormuz would be unprecedented—and nearly impossible for the market to absorb.Read more insights from Morgan Stanley.----- Transcript -----Andrew Sheets: Welcome to Thoughts on the Market. I'm Andrew Sheets, Global Head of Fixed Income Research at Morgan Stanley.Martijn Rats: I'm Martijn Rats, Head of Commodity Research at Morgan Stanley.Andrew Sheets: Today on the program we're going to talk about why investors everywhere are tracking ships through the Strait of Hormuz.It's Wednesday, March 11th at 2pm in London.Andrew Sheets: Martijn, the oil market, which is often volatile, has been historically volatile over the last couple of weeks following renewed military conflict between the United States and Iran.Now, there are a lot of different angles to this, but the oil market is really at the center of the market's focus on this conflict. And so, I think before we get into the specifics, I think it's helpful to set some context. How big is the global oil market and where does the Persian Gulf, the Strait of Hormuz fit within that global picture?Martijn Rats: Yeah, so the global oil consumption is a little bit more than a 100 million barrels a day. But that splits in two parts. There is a pipeline market and there is a seaborne market. And when it comes to prices, the seaborne market is really where it's at. If you're sitting in China, you're buying oil from the Middle East, all of a sudden, it's not available. Sure, if there is a pipeline that goes from Canada into the United States, that doesn't really help you all that much.Andrew Sheets: So, it's the oil on the ships that really matters.Martijn Rats: It's the oil on ships that is the flexible part of the market that we can redirect to where the oil is needed. And that is also the market where prices are formed. The seaborne market is in the order of 60 million barrels a day. So, only a subset of the 100 [million]. Now relative to that 60 million barrel a day, the Strait of Hormuz flows about 20 [million]. So, the Strait of Hormuz is responsible for about a third of seaborne supply, which is, of course, very large and therefore, you know, very critical to the system.Andrew Sheets: And I think an important thing we should also discuss here, which we were just discussing earlier today on another call, is – this is a market that could be quite sensitive to actually quite small disruptions in oil. So, can you give just some sense of sensitivity? I mean, in normal times, what sort of disruptions, in terms of barrels of oil, kind
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