Assets prices are greatly affected by the risk free rate. For example, stocks and bonds.
Stocks
One way to evaluate stock prices is to use the "dividend discount model –
DDM". DDM only considers stocks' dividends when deriving their prices.
When Stocks Pay Fixed Dividends
Under DDM, a stock's price is the present value of all its future dividends.
Assuming the stock pays annual dividend, and has just paid its dividend. The
interest is r, then the pricing formula is:
For example, stock A pays quarterly dividends of 1 dollar. The following table
shows its prices based on different interest rates(a quarterly interest rate
is derived by dividing interest rate by 4).
Stock A's Price | Interest Rate |
---|---|
$100 | 4% |
$50 | 8% |
$33.33 | 12% |
When Stocks Pay Increasing or Deceasing Dividends
When a stock pays dividends that changes with a ratio of d every
year and the interest is r, its pricing formula becomes:
r has to be bigger than d, because there are no negative stock
prices.
For example, stock A pays quarterly dividends of 1 dollar which increases by
1% quarterly. The following table shows its prices based on different
interest rates(a quarterly interest rate is derived by dividing interest
rate by 4).
Stock A's Price | Interest Rate |
---|---|
$400 | 5% |
$66.67 | 10% |
$36.36 | 15% |
Suggested reading: Stock Pricing Based on Dividend Discount Model
Bonds
A bond's price is the present value of all coupons and its face value when
it does not default. Assuming a 10-year bond pays annual coupons, the
interest rate is r, its pricing formula is:
Stock A's Price | Interest Rate |
---|---|
$150 | 0% |
$100 | 5% |
$69.28 | 10% |
Conclusion
With all other conditions unchanged, bonds and stocks' prices drop once
interest rate rises, and their prices rise otherwise.
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