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Aaran Ameli-Daniel's avatar

Wow Sara, so much to dive into here and a really interesting topic!

As you suggest there is no definitive answer; there is just not enough historical data to draw certainties from and even if there was, we would be talking about what has happened not what will happen.

To my mind, the rolling correlation charts here don’t give any reason to suggest wine is any more correlated with stocks than gold.

Completely agree that what matters is how assets behave during drawdowns and while wine fell in 08 (an unprecedented financial failure), it reached new highs by early 2010 and the S&P didn’t do so until 2013.

The wine bull run from 2020 to 2023 coincided with both stocks and gold falling in unison. Yes, it was followed by a wine crash and a stock market rally but that supports the argument for low correlation. (Again this is a short historical timeframe with few examples to draw from.)

Context is really important here too. While we might debate which is a better diversifier wine vs gold, wine appears a much better portfolio diversified than many other assets. The rolling correlation charts S&P 500 vs corporate bonds, Nikkei 225, Hang Seng etc. generally hover around or above +0.5. Even bitcoin and the S&P have had a rolling correlation above 0.5 since 2022.

Of course, some factors that affect stocks also affect wine, like how wealthy people are feeling or interest rates but there are also a tonne of factors that either only affect wine or affect wine in an idiosyncratic way:

- Crop yields impact on scarcity

- Long-term impacts of climate change

- Wine specific boom-and-bust trends like the 09-11 boom in Chinese wine interest, particularly in Bordeaux.

- Trends across the globe especially in emerging markets economies, a few studies have noted as emerging markets grow in wealth (think Brazil, India etc) fine wine tends to enter the zeitgeist.

- Veblen good dynamics, high price of some wines in effect drive demand. The likes of DRC just seem to go up and up in the long-run.

While I agree with a lot of what you have said, I feel like you’re leaving out some of the argument and evidence in favour of wine as a diversifier. I think we agree that the data doesn’t suffice alone and the theory plays an important role.

p.s. Sorry for the essay response!

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Angelo Turi's avatar

Excellent post, as usual!

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