ACI – THE FINANCIAL MARKETS ASSOCIATION
ACI ? THE FINANCIAL MARKETS ASSOCIATION
EXAMINATION FORMULAE
page number INTEREST RATE.............................................................................2 MONEY MARKET.............................................................................3 FORWARD-FORWARDS & FORWARD RATE AGREEMENTS.................4 FIXED INCOME................................................................................5 FOREIGN EXCHANGE.....................................................................7 OPTIONS.......................................................................................8
In all the formulae:
? interest rates, yields, coupon rates and rates of discount are expressed as a decimal, eg 8.53% will be expressed as 0.0853
? `annual basis' is the number of days in a year assumed under the appropriate rate convention
? `term' is the number of days from settlement to maturity of the instrument in question
? `day count' is the number of days from settlement to maturity of the instrument in question.
INTEREST RATE CONVERSIONS
Converting between bond basis and money market basis (Act/360)
ratebond basis
= ratemoney market basis
365 360
ratemoney market basis
= ratebond basis
360 365
Converting between annually and semi-annually compounding frequencies
rate annually-compounded
= 1 +
rate semi-annually compounded 2
2
-1
( ) rate semi-annually compounded = 1 + rate annually compounded - 1 2
The formulae for converting between annually and semi-annually compounded rate apply only to rates quoted on a bond basis, not a money market basis.
2
Certificates of deposit
MONEY MARKET
proceeds at maturity = face value ( 1 + coupon x term ) annual basis
secondary market proceeds = proceeds at maturity 1 + yield x day count annual basis
Discount-paying instruments quoted as a true yield
secondary market proceeds =
face value
1 + yield x day count
annual basis
Discount-paying instruments quoted as a rate of discount
discount amount = face value rate of discount x day count annual basis
secondary market proceeds = face value 1- rate of discount x day count
annual basis
true yield =
rate of discount
1- rate of discount x day count
annual basis
Forward price of sell/buy-back
forward price = (repurchase price - accrued interest on collateral at termination)100
nominal price of collateral
3
FORWARD-FORWARDS & FORWARD RATE AGREEMENTS
forward - forward rate =
1 +
interest
ratelong period x day count long period annual basis
- 1
annual basis
1 +
interest
rate short period x day count annual basis
short
period
day count forward-forward period
(FRA rate - settlement rate) x d ay count
FRA settlement amount = notional principal amount
annual basis
1 + settlement rate x day count
annual basis
4
FIXED INCOME
Clean and dirty price of bond with annual coupons on coupon date
price =
100
coupon yield
1 -
(1 +
1
) yield remaining coupons
+
(1 +
1
) yield remaining coupons
Dirty price of bond with annual coupons
dirty price =
( ) ( ) ( ) first cashflow days to next coupon
1 + yield annual basis
+
second cashflow
1
+
yield
1+
days to next coupon annual basis
+L+
nth cashflow
1+
yield
(n-1)+ days to next coupon
annual basis
Duration at issue or on a coupon date
Macaulay Duration =
(present value of first coupon amount x time to first coupon) +
(present value of second coupon amount x time to second coupon) + ...
+(present value of (last coupon amount + nominal amount ) x time to last coupon)
net present value of bond
Modified Duration =
Macaulay Duration
1 +
yield compounding frequency
5
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