Consider a bank with the following balance sheet (M means million):
Assets |
Value |
Duration of the Asset |
Convexity of the Asset |
5yr bond bought at a yield of 3.4% (lending money) |
$550M |
4.562 |
12.026 |
12yr bond bought at a yield of 4% (lending money) |
$800M |
9.453 |
53.565 |
Liabilities |
Value |
Duration of the Liability |
Convexity of the Liability |
2yr bond sold at a yield of 2.4% (borrowing money) |
$300M |
1.941 |
2.384 |
4yr bond sold at a yield of 2.8% (borrowing money) |
$500M |
3.759 |
8.206 |
If the yield rate go up by 1%, using the duration and convexity rule to determine the net worth of the bank and the equity to asset ratio;
PLEASE EXPLAIN HOW TO FIND THE NEW BOND PRICE & MENTION THE FORMULA USED CLEARLY
NEW YIELD RATE CALCULATION
duration and convexity approach = --Duration * % change in Y + 1/2 * convexity * (% change in Y) ^ 2
Liability
2yr bond
--1.941 * 1% + 1/2 * 2.384 * 1%^2 = 1.92% (Bond price will fall by 1.92%) value = ( $294.24 M )
4 yr bond
--3.759 * 1% + 1/ 2 * 8.206 * 1%^2 = 3.717% ( Bond price will fall by 3.717%) value = ( $481.41M )
ASSET
5 yr
--4.562 * 1% + 1/2 * 12.026* 1%^2 = 4.50% ( Bond price will fall by 4.50% ) value = ( $ 525.25 M)
12 yrs
--9.453 * 1% + 1/2 * 53.565 * 1%^2 = 9.185% ( Bond price will fall by 9.185% ) Value = ( $ 726.52M )
networth = ASSET -- LIABILITIES
1251.77M -- 775.62M = 476.15M
Equity asset ratio
equity / asset
476.15M / 1251.77M
= 38%
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