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Gold and Equity Correlation Depends on Market Stress and Real Rates

Article Quant Q&A · Author: Jorisdrees

Summary

The discussion examines whether gold is a reliable hedge for equities after a broad-period Bloomberg correlation between gold and the S&P 500 appears close to zero, while a VIX regression shows a stronger inverse relationship. It explains that the correlation between gold and stocks can become negative during market stress, while normal periods blur the relationship. This means a single full-sample correlation may conceal regime differences.

A second explanation separates gold’s safe-haven role from its day-to-day correlation with stocks. It frames gold as an asset whose price is sensitive to real interest rates: higher real yields raise the opportunity cost of holding non-yielding gold, while lower yields can support it. Equity reactions to real rates depend on whether stronger growth and profits outweigh the higher discount rate. The discussion offers conceptual reasoning and a pointer to stress-period comparisons, but no detailed data or hedge-performance test. Its suggestion that VIX instruments or equity futures may be more suitable hedges is not evaluated quantitatively.

Key ideas

  • Gold and equities can show weak overall correlation even if they move inversely during stress periods.
  • A full-sample correlation can obscure relationships that vary across market regimes.
  • Gold’s lack of yield makes its price sensitive to changes in real interest rates.
  • Equity responses to real rates depend on the balance between growth expectations and discounting.
  • The discussion does not establish that VIX instruments outperform other equity hedges.

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Full text
# Correlation Gold and SPX in BBG


# Correlation Gold and SPX in BBG












I was always under the impression that gold as a safe haven was more or less inversely correlated to the general market.

After using the HRA function in Bloomberg I saw that the correlation is just -0.019 as you can see on the right.

On the other hand when I use the regression analysis with the VIX I get an inverse correlation of -0.710.

I think i've been making the error that gold and the SPX are inversely correlated when in fact they are not strongly correlated at all and a more efficient hedge against volatility is using a VIX instrument.

Could somebody help me understand this?

## Answer by AK88 (score 5, accepted)

https://quant.stackexchange.com/a/50421

I do not think that you were terribly wrong thinking that gold and SPX (or equity market in general) are negatively correlated. The reason behind this is that gold and stocks are in fact negatively correlated in stress periods. Here are some stress periods and the correlations for SPX and gold (and silver):

However, if you include normal periods, then the relationship gets more blurred.

Also, if you are hedging your equity exposures, why don't you just use futures?

## Answer by demully (score 4)

https://quant.stackexchange.com/a/50456

Gold's "safe haven" credentials and its correlation to equities are not necessarily quite the same thing.

Gold is a safe haven, in the sense that whatever happens in the economy, an ounce will always remain an ounce. It remains gloriously unchanged, whatever else happens around it. Which is why asset allocators often think about it as akin to a perpetual zero-coupon inflation-linked bond.

So its correlation to equities is really telling you more about equities than about gold. Gold is gloriously unchanged, whatever happens; so all the price movement that generates any correlation is really a story about what moves equities, such that they are independent of gold (as opposed to negatively correlated).

In essence, this becomes a story about real interest rates, which is a broad proxy for the cost of capital. Higher real is the kiss of death for gold, because I can buy positive-yielding inflation-linked bonds that give me a coupon that gold does not offer. And vice versa. The question is how stocks respond to the same. Higher real might mean a booming economy, and thus booming profits. Good for stocks. It might mean a tight monetary policy that discounts profits (from an unchanged economic growth rate) more aggressively. This would be bad for stocks. XYZ's profits might be 10% higher in a decade's time; but if the aggregate interest from now to then is 20% higher, those future profits will be worth less today.

So the stock:gold correlation is really a proxy for whether it's the economic hot/cold versus the financial loose/tight that's driving stock prices. In recent years, no surprise, it's the financial>economic that wins, hands down.

hope this helps.

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