Could liquidity dry up in US Treasuries?

Declining liquidity in US Treasuries – the global 'safe-haven' asset – could have unpredictable consequences.

Russ Koesterich, the chief executive investment officer of BlackRock, the world's largest asset manager, is worried, says Szu Ping in The Daily Telegraph.With interest rates set to begin rising again after years at record lows, Koesterich is concerned that "complacent investors could be left floundering in a world of evaporating liquidity" as ultra-easy monetary policies come to an end.

Hedge fund manager Ray Dalio of Bridgewater Associates has gone further; in a recent note, he warned clients that the Federal Reserve risks "triggering a 1937-style stockmarket crisis when it starts to raise rates". Back then, US stocks slumped 55% as policymakers began to wind down the stimulus measures they had introduced in an attempt to lift the economy out of the great depression.

Perhaps the greatest fear is how tighter policy will affect the US bond market. This is "the biggest and most liquid in the world, and forms the bedrock for the global financial system", says the FT's Robin Wrigglesworth.

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Yet it experienced unprecedented volatility last autumn, and Federal Reserve officials have warned that this "could happen again due to the changing nature of the US government debt market".

Fears centre on "regulatory changes that encourage the hoarding of Treasuries and discourage banks from helping to cushion sharp moves in bond markets". The rise of "electronic, high-frequency trading in the US government bond market" is another cause for concern. Declining liquidity in US Treasuries the global 'safe-haven' asset could have unpredictable consequences.

Dr Matthew Partridge

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.

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