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
years0123…15PV = ?€2 000€2 000€2 000€2 000

An annuity pays €2 000 at the end of each year for 15 years. The interest rate is 8% per year. Find the present value PV of the annuity.

A = €2 000i = 8%n = 15
PV = €
2.Time value of moneyHard
months0123…192€200€200€200FV = ?

You save €200 at the end of every month for 16 years. The account pays 7.2% per year, compounded monthly. How much have you saved at the end? Find FV.

A = €2007.2% / 12N = 192
FV = €
3.Bond pricing & yieldMedium

You buy a bond with 11 years to maturity (face value €1 000, annual coupon 8%) when its yield to maturity is 2.5%. One year later, just after receiving the first coupon, you sell it when the yield to maturity is 2%. Find your holding period return HPR in percent.

F = €1 000coupon = 8%n = 11y0 = 2.5%y1 = 2%
HPR = %
4.Bond pricing & yieldHard
half-years0123…18€1 037€22.50€22.50€22.50 + €1 000

A bond with a face value of €1 000 pays a 4.5% annual coupon in two half-yearly payments and matures in 9 years. It sells for €1 037. Find its yield to maturity YTM as an annual rate (twice the half-yearly yield), in percent.

F = €1 000coupon = 4.5% (2×)n = 9P = €1 037
YTM = %
5.CAPM & WACCMedium
βr (%)SMLrf​ = 2.5%β = 1rm​ = ?β = 0.8re​ = 7.7%

A share with a beta of 0.8 has a required return of 7.7%. The risk-free rate is 2.5%. What expected market return rm does CAPM imply?

β = 0.8re = 7.7%rf = 2.5%
rm = %
6.CAPM & WACCHard
WACC = ?equity4 000 000 × €36.00β = 1.3rf​ = 4%, rm​ = 9.5%debt10 000 × €1 000rd​ = 7%T = 21%

A company has 4 000 000 shares at €36.00 each and 10 000 bonds trading at €1 000 each. The pre-tax cost of debt is 7% and the tax rate is 21%. The share’s beta is 1.3, the risk-free rate 4% and the market return 9.5%. Find the WACC.

β = 1.3rf = 4%rm = 9.5%rd = 7%T = 21%
WACC = %
7.NPV & IRRMedium
years01234−75 00036 00020 00024 00034 000

An investment of €75 000 gives these cash flows at the end of years 1 to 4: €36 000, €20 000, €24 000, €34 000. The cost of capital is 15%. Find the net present value NPV.

r = 15%CF0 = −75 000CF1 = 36 000CF2 = 20 000CF3 = 24 000CF4 = 34 000
NPV = €
8.NPV & IRRHard
years01234567−50 0006 500+3%+3%+3%+3%+3%+3%r = 12%, NPV = ?

A project costs €50 000 today. Its cash flow is €6 500 at the end of year 1 and grows by 3% per year until the last cash flow at the end of year 7. The cost of capital is 12%. Find the net present value NPV.

C0 = €50 000CF1 = €6 500g = 3%n = 7r = 12%
NPV = €

3Solutions

1.Time value of money

Answer: PV = 17119 €

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.

Annuity factor

(1 − (1 + i)−n)/i = (1 − 0.3152)/0.08 = 8.559

Present value

PV = 2 000·8.559 = €17 118.96

Answer

PV = €17 118.96
2.Time value of money

Answer: FV = 71788 €

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.

Monthly rate and number of deposits

i = 0.07200000000000001/12 = 0.006
N = 12·16 = 192

Future value of the deposits

FV = A·((1 + i)N − 1)/i = 200·(3.154 − 1)/0.006 = €71 788.04

Answer

FV = €71 788.04

You paid in €38 400 yourself; the rest is interest.

3.Bond pricing & yield

Answer: HPR = 6.281 %

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.

Purchase price

C = €80.00, i = 0.025, N = 11
€80.00·(1 − 0.7621)/0.025 + €1 000·0.7621 = €761.14 + €762.14 = €1 523.28

Selling price

C = €80.00, i = 0.02, N = 10
€80.00·(1 − 0.8203)/0.02 + €1 000·0.8203 = €718.61 + €820.35 = €1 538.96

Holding period return

HPR = (80 + 1 538.96 − 1 523.28)/1 523.28 = 6.281%

Answer

HPR = 6.281%
4.Bond pricing & yield

Answer: YTM = 4.006 %

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 = €22.50, N = 18

Solve numerically

i = 2.003% per half-year

YTM

YTM = 2·2.003% = 4.006%

Answer

YTM = 4.006%
5.CAPM & WACC

Answer: rm = 9 %

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).

Market risk premium

rm − rf = (7.7% − 2.5%)/0.8 = 6.5%

Market return

rm = 2.5% + 6.5% = 9%

Answer

rm = 9%
6.CAPM & WACC

Answer: WACC = 10.79 %

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).

Market values

E = 4 000 000·€36.00 = €144 000 000
D = 10 000·€1 000 = €10 000 000

Cost of equity (CAPM)

re = 4% + 1.3·5.5% = 11.15%

Weights

V = €154 000 000, E/V = 0.9351, D/V = 0.06494

WACC

WACC = 0.9351·11.15% + 0.06494·7%·(1 − 0.21) = 10.79%

Answer

WACC = 10.79%
7.NPV & IRR

Answer: NPV = 6647 €

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.

Present value of each cash flow

CF0 = −75 000
CF1/(1 + 0.15)1 = 36 000/1.15 = 31 304.35
CF2/(1 + 0.15)2 = 20 000/1.322 = 15 122.87
CF3/(1 + 0.15)3 = 24 000/1.521 = 15 780.39
CF4/(1 + 0.15)4 = 34 000/1.749 = 19 439.61

Add them up

NPV = €6 647.22

Answer

NPV = €6 647.22

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

8.NPV & IRR

Answer: NPV = −17957 €

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.

Present value of the growing annuity

((1.03)/(1.12))7 = 0.5563
PV = 6 500/(0.12 − 0.03)·(1 − 0.5563) = 32 042.65

NPV

NPV = 32 042.65 − 50 000 = −€17 957.35

Answer

NPV = −€17 957.35

NPV is negative, so the project earns less than the required return.

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