Bayer’s Monsanto mess

German giant Bayer has made a pig’s ear of buying the US biotech Monsanto: the stock is wilting amid legal trouble over a weedkiller. Matthew Partridge reports.

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A weedkiller that's destroying market value

"Bad news for Bayer," says James Moore in The Independent. Last week, a California jury found that Monsanto, the US biotech that the German chemical giant bought for $66bn last year, had "acted with malice or oppression" by not being honest about the health risks of one of its products, a weedkiller called Roundup. The court has awarded a cancer victim $289m in damages. While Bayer is likely "to throw everything it can" at ensuring it wins on appeal, this is the second Roundup case that has gone against it. In addition to the potential legal liability, Bayer could lose billions of future sales of Roundup, one of the world's most commonly used agro-chemicals.

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Dr Matthew Partridge
Shares editor, MoneyWeek

Matthew graduated from the University of Durham in 2004; he then gained an MSc, followed by a PhD at the London School of Economics.

He has previously written for a wide range of publications, including the Guardian and the Economist, and also helped to run a newsletter on terrorism. He has spent time at Lehman Brothers, Citigroup and the consultancy Lombard Street Research.

Matthew is the author of Superinvestors: Lessons from the greatest investors in history, published by Harriman House, which has been translated into several languages. His second book, Investing Explained: The Accessible Guide to Building an Investment Portfolio, is published by Kogan Page.

As senior writer, he writes the shares and politics & economics pages, as well as weekly Blowing It and Great Frauds in History columns He also writes a fortnightly reviews page and trading tips, as well as regular cover stories and multi-page investment focus features.

Follow Matthew on Twitter: @DrMatthewPartri