As the Iran conflict upends market narratives, our Global Head of Fixed Income Research Andrew Sheets offers his take on how to view the historic disruption happening in March and what the next few weeks could bring.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. Today on the program, a survey of just how quickly key narratives have changed and how lasting that might be. It's Friday, March 20th at 2pm in London. The NCAA basketball tournament, also known as March Madness, is one of my favorite times of the year. The single elimination tournament of 64 teams is wonderfully chaotic with plenty of surprises, especially in the early games. And basketball is one of those sports where momentum often seems real. A team that has somehow forgotten how to shoot in the first half of the game can suddenly look unstoppable in the second. As I said, March is one of my favorite times to watch sports. It is often not one of my favorite times to forecast markets. In 2005, 2008, 2020, 2022, 2023, and 2025, March saw outsized market volatility. And it’s the case again this year. I'm sure, it's just a coincidence. This time, it's not just about a historic disruption to the energy markets, which my colleague Martijn Rats and I discussed on this program last week. It's also a major reversal of the market storyline. If this were a basketball game, the momentum just flipped. In January and February of 2026, there were strong overlapping signals that the U.S. and global economy were in a good – even accelerating – place, boosted by cheap energy, stimulative policy, and robust AI investment. Oil prices were down as metals, transports, cyclicals and financial stocks, all rose. Europe, Asia, and emerging market equities – all more sensitive to global growth – were outperforming. Inflation was moderating. Central banks were planning to lower interest rates. The yield curve was steepening and the U.S. dollar was weakening. The January U.S. Jobs report was pretty good. And then … it all changed. In a moment, the Iran conflict and the subsequent risk of an oil price shock flipped almost every single one of those storylines on its head. Now, oil prices rose and the prices for metals, transports, cyclicals and financial stocks all fell. Equities in Europe and Asia – regions that rely heavily on importing oil – underperformed. The U.S. dollar rose as investors sought out safe haven. Inflation jumped following oil prices. The yield curve flattened on that higher inflation, as we and many other forecasters adjusted our expectations for what central banks would do. And, as it happens, the last U.S. Jobs report was pretty bad. If the Iran conflict ends and oil resumes flowing through the Strait of Hormuz, it's very possible that this story could once again swing back. But until it does, the speed of which this momentum has flipped means that almost by definition, many investors have been caught off guard and left poorly positioned. If you couple that with the challenge of diversifying in this new environment – where the prices for stocks, bonds, and even gold have all been moving in the same direction – the path of least resistance for investors may be to continue to reduce their exposure to ride out the storm, driving further near term weakness.Unfortunately, that could make for an uncomfortable few weeks. At least, there's some good basketball on. Thank you as always, for your time. If you find Thoughts on the Market useful, let us know by leaving a review wherever you listen. And also tell a friend or colleague about us today.

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