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The stock market barometer

Asset markets are fuelling US consumer exuberance, but this reflexive relationship could see an abrupt reversal
Line graph tracking US personal sector net worth as a percentage of disposable income from 1952 to 2024. The ratio remained stable around 450-500% until the 1980s, then trended upward, reaching unprecedented levels above 750% in recent years.
Oliver Shale
Investment Specialist, US | Ruffer LLC registered representative

This month’s Green Line comes from Ruffer’s office in New York, where temperatures recently hit lows of 10◦ Fahrenheit (-12◦C). Despite the winter chill, would-be patrons can be seen queueing around the block for a table at the city’s hottest restaurants. Those who are staying in aren’t slowing their spending either – Netflix recently added the most quarterly subscriptions ever.

And it is not just the everyday consumer who is keen to spend. Our office is a few blocks from Sotheby’s, the prestigious auction house, which recently sold an artwork by Maurizio Cattelan to a cryptocurrency entrepreneur for $6.2 million. Why is this noteworthy? Because the piece was a banana, duct-taped to a wall, and the new owner subsequently ate it.

The feeling of exuberance is palpable here. Across the retail sector, real-time spending indicators suggest US consumers have no intention of slowing. Business confidence is climbing. The new administration, emboldened by winning the popular vote, looks set to shake up an orthodoxy that many people feel needs to change. The promise to be pro America at the expense of everything else resonates strongly. These are winner-takes-all markets, and the US is winning.

Perhaps a key driver of the optimism is the US stock market. As this month’s chart shows, the value of personal financial assets dwarfs the size of disposable income. It is potentially the more important determinant of how well-off consumers feel. Given US equity markets are near all-time highs and households have a record overweight to the asset class, Americans have reason to cheer. And retail investors expect much more from their investments: a 15.6% annualised return above inflation over the long term.

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But a world where animal spirits are running wild is also one that has temporarily divorced from fundamentals. Experience tells us this often doesn’t end well. 

This matters because the US is now a hyper-financialised economy. Economic conditions and financial markets are inextricably linked. Consumers, business leaders and politicians take their cues from the stock market, and the feedback between the two can be highly reflexive. Much of the strength we see in the US economy today may depend on the level of asset prices.

To date, this reflexive loop has only worked in one direction. Up. But this comes at a price. US asset valuations are expensive. Only three times since the Second World War has the S&P 500 Index managed three consecutive years of double-digit returns. Are we really going to see a third year this time? 

Asset prices scream optimism, and they have become a fundamental in and of themselves. We see the need for caution. Valuations, though not a good indicator of the timing of any correction, are at levels that imply poor long-term returns. Sentiment and positioning are stretched, and the potential for disappointment is high. Geopolitics and monetary and fiscal policy point to more volatility, not less. 

The vibes on the ground are important, but so are the fundamentals. For now, the US consumer and US asset markets are feeding off each other. Yet the excesses can unravel quickly. At Ruffer, we think it’s crucial to be positioned for when, not if, the exuberance comes to an end.

Oliver Shale
Investment Specialist, US | Ruffer LLC registered representative
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Piers Wheeler
Director – Institutional
Developing and executing asset management strategy for capital raising and strategic relationship management. Coverage includes EMEA, Asia and Australia. Piers joined Ruffer in 2021, having previously worked with asset management firms including Eastspring, AMP Capital and LEK as a strategic consultant. He holds a MA from the Bayes Business School and a BA (Hons) from the University of Oxford.
Annabel Paterson
Annabel Paterson
Senior Associate – Institutional
Joined Ruffer in 2021, having graduated with a first class honours degree in land economics from the University of Cambridge. After two years working with the UK Private Wealth team and completing her IMC and CFA Level I qualifications, she now supports Ruffer’s global business development and client servicing efforts.

Chart source: Federal Reserve. Aggregate value of financial and non financial assets net of outstanding debts, scaled relative to total disposable income. December 2024 value is Ruffer estimate interpolated from asset price movements

The views expressed in this article are not intended as an offer or solicitation for the purchase or sale of any investment or financial instrument, including interests in any of Ruffer’s funds. The information contained in the article is fact based and does not constitute investment research, investment advice or a personal recommendation, and should not be used as the basis for any investment decision. References to specific securities are included for the purposes of illustration only and should not be construed as a recommendation to buy or sell these securities. This article does not take account of any potential investor’s investment objectives, particular needs or financial situation. This article reflects Ruffer’s opinions at the date of publication only, the opinions are subject to change without notice and Ruffer shall bear no responsibility for the opinions offered. This financial communication is issued by Ruffer LLP which is authorised and regulated by the Financial Conduct Authority in the UK and is registered as an investment adviser with the US Securities and Exchange Commission (SEC). Registration with the SEC does not imply a certain level of skill or training. © Ruffer LLP 2025. Registered in England with partnership No OC305288. 80 Victoria Street, London SW1E 5JL. For US institutional investors: securities offered through Ruffer LLC, Member FINRA. Ruffer LLC is doing business as Ruffer North America LLC in New York. Read the full disclaimer

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London
Ruffer LLP
80 Victoria Street
London SW1E 5JL
Paris
Ruffer S.A.
103 boulevard Haussmann
75008 Paris, France
New York
Ruffer LLC
300 Park Avenue
New York NY 10022
Edinburgh
Ruffer LLP
31 Charlotte Square
Edinburgh EH2 4ET