Economic Flashcards
m-to-m value of forward contract VT=
=(FPt- FP)(contract size)
/ (1 + r *days/360))
covered interest parity Forward =
arbitrage free value
SPOT * (1+ rp (n/360))
/(1 + rb(n/360))
linear approx: fwd/spot-1 =rp-rb
fwd>spot –premium
strong currency,
fwd < spot
weak currency
discount
forward premium/discount
forward rate - spot rate
=S0 * ([1+Rp(days/360)/(1+rb(days/360)) -1 ]
covered interest arbitrage
forward - competed forward
fwd > computed fwd:
sell the base, borrow the quoted, convert to base in spot and invest today
fwd < computed fwd
sell the quoted, borrow the base, convert to quoted in spot and invest today
purchasing power parity ppp
E(change in spot p/b) = pai p - paib
uncovered interest rate parity UIRP
E(change in spot p/b) = Rp - Rb
high interest rate should depreciation. relative to lower interest rate.
fisher effect
r = real + E(inflation)
international fisher effect
Rprice - Rbase = E(inflationoP)-E(inflation B)
forward rate is unbiased predictor of future spot
E(St) =
F
carry trade (depend on UCIP doesn't hold in ST) flat trail & negative screw
if uncovered rip does not work in st, invest in higher old currency and borrow in lower yld currency.
risk: crash risk due to non normal distribution of carry trade returns
negative screwiness and excess kurtosis
return on carry trade:
interest earned on investment
- funding cost
- investment currency depreciation
profit only if UCIP does NOT hold.
BOP - current account influences
flow mechanism
portfolio composition mechanism
debt sustainability mechanism
BOP - Capital (financial) account
higher relative real rates attract foreign capital, appreciating domestic currency
excess capital flows lead to undue appreciation of local currency - especially problematic for em mkt
monetary policy/fisher policy (mundell-fleming) ST
expansion on both, depreciation in low capital
restrictive on both, appreciation in low capital mobility
expansion on monetary, depreciation in high capital
expansion on fiscal, appreciation in high capital mobility
monetary approach -
pure monetary approach
ppp holds at any point
expansionary monetary policies lead to higher inflation and depreciation of currency
dornbusch overshooting model
output prices are sticky in the short run but fully flexible in the long run.
expansionary monetary policy increases the real money supply and prices are slow to react in the rt. This causes the nominal and real exchange rates to depreciate. exchange rates gradually increase towards their pp implied values
portfolio balance approach (LT)
IN LONG TERM, gov’t may find it increasingly difficult to fund sustained deficits, leading to depreciation of the currency.
Sp/b =
Law of one price
CPI(p) / CPI(b)