Why Bonds Aren't Softening Stock Falls Right Now
Global stocks and government bonds were moving in the same direction, with a three-year correlation of about 0.59 at the end of September 2026. Reuters
The number covers a three-year window for global benchmarks. It keeps the link between stocks and bonds positive.
On February 18, 2026, the International Monetary Fund published analysis titled "Stock-Bond Diversification Offers Less Protection From Market Selloffs". IMF
In the past, when stocks fell, investors bought safer bonds. Bonds rose and softened the loss. That old pattern was the starting point for the Fund's work.
Analysts noted in September 2026 that this positive link appeared after the COVID-19 inflation shock. Reuters
The link tends to turn positive when inflation, the general rise in prices, is high, usually around 2.7%, except in recessions. Reuters
The broader context here matters for ordinary savers. Think of bonds as a cushion that usually softens a fall in stocks. When both fall together, a retirement pot holding both swings more, and buying back into stocks after a drop does not get the usual help from rising bonds.
In my view, how long this has lasted matters more than the number itself. A three-year average moves slowly. It suggests inflation is pulling both sides at once, so old rules from calm, low-inflation years understate how painful a joint drop can be.
Looking at what this means for risk practice, measurement matters as much as mix. Simple averages of the past carry high inflation forward. It helps to plan separately for weak demand and for tight supply, because that decides whether bonds steady the portfolio or make the fall worse.
