The relationship between stock market valuations and 10-year yields has been a topic of interest for many investors and analysts. While there is no consensus on the exact threshold at which the yield becomes a significant headwind, historical data suggests that the impact becomes more pronounced once the 10-year moves meaningfully above 4.5%.

To understand this phenomenon, let’s take a closer look at the historical data. As seen in the chart below, there have been several instances where the 10-year yield has moved significantly above 4.5%, and each time it has resulted in a decline in stock market valuations.

The chart shows that when the 10-year yield has moved above 4.5%, it has typically led to a decrease in stock prices, as investors become more risk-averse and demand higher yields from their investments. This is because higher interest rates make equities less attractive relative to bonds, leading to a decrease in investor appetite for stocks.

It’s worth noting that this relationship is not absolute, and other factors such as economic growth, inflation, and geopolitical tensions can also impact the stock market. However, the historical data suggests that when the 10-year yield moves significantly above 4.5%, it becomes a significant headwind for the stock market.

So what does this mean for investors? While it’s impossible to predict with certainty how the stock market will perform in the future, understanding the relationship between interest rates and valuations can help inform investment decisions. For example, if the 10-year yield is currently above 4.5%, investors may want to consider reducing their exposure to equities and focusing on other asset classes that are less sensitive to interest rate changes.