Investments and Valuation: cram pack

Formula sheets, the key method steps for every topic and 8 practice problems, with full solutions at the back.

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1Formulas and methods

Time value of money

Future value
FV = PV·(1 + i)n
Present value
PV = FV/(1 + i)n
Several periods per year
i = r/m, N = m·n
Annuity, present value
PV = PMT·[1 − (1 + i)−n]/i
Annuity, future value
FV = PMT·[(1 + i)n − 1]/i

Method

  1. Draw a timeline with every cash flow and its timing.
  2. Match the rate to the period: a monthly rate for monthly payments.
  3. Use FV = PV·(1 + i)ⁿ for single amounts and the annuity formulas for equal payments.
  4. Check the sign and the order of magnitude of the answer.

Bond pricing & yield

Bond price
P = C·(1 − (1 + y)−n)/y + F/(1 + y)n
Semi-annual
C/2, y/2 and 2n periods
Current yield
C/P
Price and yield
yield up → price down

Method

  1. Find the coupon per period and the yield per period.
  2. Price = present value of the coupons (an annuity) + present value of the face value.
  3. For semi-annual coupons use half the coupon, half the yield and twice the periods.
  4. Check: if the yield is above the coupon rate, the price is below face value.

CAPM & WACC

CAPM
re = rf + β·(rm − rf)
WACC
E/V·re + D/V·rd·(1 − T)
Firm value
V = E + D

NPV & IRR

Net present value
NPV = −C0 + Σ CFt/(1 + r)t
Equal cash flows
NPV = −C0 + CF·[1 − (1 + r)−n]/r
Internal rate of return
the r at which NPV = 0
Decision
accept when NPV > 0 (or IRR > required return)

Method

  1. List all cash flows with their year; the investment at year 0 is negative.
  2. Discount each cash flow: CFt/(1 + r)t.
  3. Add them up to get the NPV. Positive means the project earns more than r.
  4. For the IRR, find the rate that makes NPV zero by trial or interpolation.

2Practice problems

1.Time value of moneyMedium
years01234€5 000FV = ?

You invest €5 000 at a nominal rate of 4% per year, compounded quarterly. Find the value FV of the investment after 4 years.

PV = €5 0004% / 4n = 4
FV = €
2.Time value of moneyHard
years0123…30€6 000€6 000€6 000FV = ?

You deposit €6 000 at the start of every year for 30 years, the first deposit today. The account pays 4% per year. How much is in the account at the end of year 30? Find FV.

A = €6 000i = 4%n = 30
FV = €
3.Bond pricing & yieldMedium
half-years0123…20€35€35€35 + €1 000P = ?

A bond with a face value of €1 000 pays a 7% annual coupon in two half-yearly payments and matures in 10 years. The yield to maturity is 8% per year. Find the price P of the bond.

F = €1 000coupon = 7%YTM = 8%n = 10
P = €
4.Bond pricing & yieldHard
years01234€1 055€50€50 + €1 000

A bond with a face value of €1 000 and an annual coupon of 5% matures in 4 years and sells for €1 055. Find its yield to maturity YTM in percent.

F = €1 000coupon = 5%n = 4P = €1 055
YTM = %
5.CAPM & WACCMedium
WACC = ?equity€10 000 000re​ = 10%debt€5 000 000rd​ = 7%T = 28%

A company has equity worth €10 000 000 and debt worth €5 000 000. Its cost of equity is 10%, its pre-tax cost of debt is 7% and the tax rate is 28%. Find the WACC.

E = €10 000 000D = €5 000 000re = 10%rd = 7%T = 28%
WACC = %
6.CAPM & WACCHard
WACC = ?equity€6 000 000re​ = 11%bonds5 000 × €960coupon 7%, n = 5T = 30%

A company has equity with a market value of €6 000 000 and a cost of equity of 11%. Its debt consists of 5 000 bonds (face value €1 000, annual coupon 7%, 5 years to maturity) that trade at €960 each. The tax rate is 30%. Find the WACC, using the yield to maturity of the bonds as the pre-tax cost of debt.

E = €6 000 000re = 11%bonds: 5 000 × €960coupon = 7%n = 5T = 30%
WACC = %
7.NPV & IRRMedium
years0123…9−500 00044 000+1%+1%…r = 9%, NPV = ?

A project costs €500 000 today. It generates €44 000 at the end of the first year, and the cash flow then grows by 1% per year forever. The cost of capital is 9%. Find the net present value NPV.

C0 = €500 000CF1 = €44 000g = 1%r = 9%
NPV = €
8.NPV & IRRHard
years012−20 00011 00014 000

A project costs €20 000 and returns €11 000, €14 000 at the end of years 1 to 2. Find its internal rate of return IRR in percent.

CF0 = −20 000CF1 = 11 000CF2 = 14 000
IRR = %

3Solutions

1.Time value of money

Answer: FV = 5863 €

Time value of money: money today is worth more than the same amount later, because it can earn interest. With interest rate i per period, an amount grows as FV = PV·(1 + i)n. A series of equal payments (an annuity) is valued by adding up each payment, which gives the annuity formulas.

Rate and number of periods

i = r/m = 0.04/4 = 0.01
N = m·n = 4·4 = 16

Future value

FV = 5 000·(1 + 0.01)16 = 5 000·1.173 = €5 862.89

Answer

FV = €5 862.89
2.Time value of money

Answer: FV = 349970 €

Time value of money: money today is worth more than the same amount later, because it can earn interest. With interest rate i per period, an amount grows as FV = PV·(1 + i)n. A series of equal payments (an annuity) is valued by adding up each payment, which gives the annuity formulas.

Ordinary annuity factor

((1 + 0.04)30 − 1)/0.04 = 56.08

Annuity due

Each deposit is invested one year longer.

FV = 6 000·56.08·1.04 = €349 970.01

Answer

FV = €349 970.01
3.Bond pricing & yield

Answer: P = 932 €

Bond pricing: a bond’s price is the present value of its cash flows, discounted at the yield to maturity (YTM): the coupons form an annuity and the face value is paid back at maturity. P = C·(1 − (1 + y)⁻ⁿ)/y + F/(1 + y)ⁿ. When the yield is above the coupon rate the bond trades below face value, and the other way round.

Per period

C = €35.00, i = 0.04, N = 20

Present value of the coupons

€35.00·(1 − 0.4564)/0.04 = €475.66

Present value of the face value

€1 000·0.4564 = €456.39

Price

P = €932.05

Answer

P = €932.05

The yield is above the coupon rate, so the bond sells at a discount.

4.Bond pricing & yield

Answer: YTM = 3.503 %

Bond pricing: a bond’s price is the present value of its cash flows, discounted at the yield to maturity (YTM): the coupons form an annuity and the face value is paid back at maturity. P = C·(1 − (1 + y)⁻ⁿ)/y + F/(1 + y)ⁿ. When the yield is above the coupon rate the bond trades below face value, and the other way round.

Equation for the yield

€1 055 = €50·(1 − (1 + y)⁻⁴)/y + €1 000/(1 + y)⁴

Solve numerically

P(3%) = €1 074.34, P(4%) = €1 036.30
YTM = 3.503%

Answer

YTM = 3.503%
5.CAPM & WACC

Answer: WACC = 8.347 %

Cost of capital: CAPM gives the return shareholders require: re = rf + β·(rm − rf). The weighted average cost of capital mixes equity and debt by their market values: WACC = E/V·re + D/V·rd·(1 − T), with V = E + D. Interest is tax-deductible, hence the (1 − T).

Weights

V = €15 000 000, E/V = 0.6667, D/V = 0.3333

WACC

WACC = 0.6667·10% + 0.3333·7%·(1 − 0.28) = 8.347%

Answer

WACC = 8.347%
6.CAPM & WACC

Answer: WACC = 8.601 %

Cost of capital: CAPM gives the return shareholders require: re = rf + β·(rm − rf). The weighted average cost of capital mixes equity and debt by their market values: WACC = E/V·re + D/V·rd·(1 − T), with V = E + D. Interest is tax-deductible, hence the (1 − T).

Cost of debt (YTM)

960 = 70·(1 − (1 + y)−5)/y + 1000/(1 + y)5
y = 8.002%

Market values

D = 5 000·€960 = €4 800 000
V = €10 800 000, E/V = 0.5556, D/V = 0.4444

WACC

WACC = 0.5556·11% + 0.4444·8.002%·(1 − 0.3) = 8.601%

Answer

WACC = 8.601%
7.NPV & IRR

Answer: NPV = 50000 €

Net present value: discount every cash flow back to today with the required rate of return r, then add them up: NPV = Σ CFₜ/(1 + r)ᵗ. A project with NPV > 0 earns more than r and adds value. The internal rate of return (IRR) is the rate at which NPV = 0.

Value of the cash flows

PV = 44 000/(0.09 − 0.01) = 550 000.00

NPV

NPV = 550 000.00 − 500 000 = €50 000.00

Answer

NPV = €50 000.00

NPV is positive, so the project earns more than the required return.

8.NPV & IRR

Answer: IRR = 15.57 %

Net present value: discount every cash flow back to today with the required rate of return r, then add them up: NPV = Σ CFₜ/(1 + r)ᵗ. A project with NPV > 0 earns more than r and adds value. The internal rate of return (IRR) is the rate at which NPV = 0.

Bracket the IRR

NPV falls as the rate rises, so the IRR lies between a rate with positive NPV and one with negative NPV.

NPV(15%) = 151.23
NPV(20%) = −1 111.11

Narrow down

Linear interpolation gives a first estimate; repeating it (or a calculator's IRR function) gives the exact rate.

IRR ≈ 15 + 5·151.23/(151.23 − (−1 111.11)) = 15.6%
exact: NPV(15.57%) = 0 → IRR = 15.57%

Answer

IRR = 15.57%

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