QM1_Time value of Money
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总体框架
Time Value
Interest Rate
rf: 无风险收益率 (CFA中一般认为是美国短期国债T-bill的收益率)
Nominal risk-free rate: 名义无风险税率
Real risk-free rate: 实际无风险利率
Liquidity premium: 流动性风险溢价
Maturity premium: 到期风险溢价
Risk premium: 风险溢价
费雪效应
Nominal interest rate和Stated Interest rate是一个概念
Effective annual rate(EAR)
For discrete compounding
Where: m is the compounding frequency
............. r is the noinal/quoted/stated annual interest rate
............. r/m is periodic interest rate
For continuous compounding
时时刻刻分分秒秒在计息.
例: 算名义年利率是8%, 求连续计算情形下的EAR.
....计算器按法: 0.08 --> 2ND --> LN ==>结果: 1.083287
Conversion of PV/FV
Present Value (PV)
The value of an initial investment.
Future Value (FV)
The value of an initial investment would be worth n period from today.
Conversion of PV/FV:
compounding:
continuous compounding:
站在今天去推测未来会价值几何: PV --> FV : 复利
站在未来推测今天需要存入多少: FV --> PV :折现
Annuity
Ordinary annuity
all constant cash flows occuring at the end of each period(END), 后付年金
Annuity due
all constant cash flows occuring at the beginning of each period(BEG), 先付年金
Prepetuity
a set of constant never-ending sequential cash flows occuring at the end of each period, 永续年金
PV = A/R
where A: the periodic payment
......r: the periodic return
推荐用第三种方式, 就不用再把计算器在END和BGN模式之间去转换.
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