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The inverse link between yield and price, what the 10-year yield means, and its effect on valuation
Published by The Retail Trader · AUG 09, 2026 · Features
The biggest comparison for the equity market is not with another stock. It is with the return available without any risk. That is called the bond yield, and it sits quietly behind every valuation.
A bond pays a fixed amount. If the bond's price falls, that same fixed payment is now being received on less money — meaning the yield has gone up. If the price rises, the yield falls.
It is important to remember this inverse relationship, because when the news says 'yields rose', it means the bond market fell.
The government's 10-year bond is considered nearly risk-free and becomes the reference for the whole system. Corporate borrowing, home loans, and equity valuation — all are tied to it in some way.
So a change in the 10-year yield is not just bond market news. It is the new price of the 'cost of money' for the whole market.
If the risk-free return rises, equity has to offer more than that to stay attractive. This is why valuations come under pressure when yields rise — especially for stocks whose earnings lie far in the future.
Two common yardsticks come from this thinking:
• Earnings yield — the inverse of PE. It expresses the earnings from equity as a percentage, so that it can be compared directly with a bond.
• Equity risk premium — subtract the bond yield from the earnings yield. It shows how much extra is being received for taking extra risk.
• When this premium shrinks, equity starts to look expensive, even if the absolute PE is the same.
• When this premium widens, equity looks cheap — but that often happens when fear is at its highest.
Looking at yields of different maturities together gives the yield curve. Normally the yield on longer maturity is higher.
When the yield on shorter maturity goes above the longer one — an inversion — it has historically been linked to concern about the economy slowing. This is not a guarantee, and its timing remains very uncertain, but it is a signal the bond market gives with its own money.
Equity prices are not formed from inside the company alone. A large part of them is formed by how much is available without risk. So not watching the bond market means not reading half the story of equity.
This article is for educational purposes only — it is not a buy or sell recommendation, makes no claim of guaranteed returns, and is not advisory. Rules, rates and mechanics are changed from time to time by the exchanges, SEBI and RBI, so verify every number yourself with your broker or an official source.