Questions tagged [interest]

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16 views

Calculating avg weighted interest rate , rate, loan balance and term in days [closed]

I have the data below and need to summarize the data for a class case Calculate: Weighted Average Interest Rate and Concentration by State Since the interest is paid annually I know I need to prorate ...
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32 views

Business day convention SOFR swaps

I'm looking for the standard business day convention for SOFR swaps. So for a standard fixed vs SOFR swap with annual payments using ACT/360 on both legs, spot and payment date offset of 2 days each: ...
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1answer
75 views

Is it possible to price a plain vanilla interest rate swap in Python and simulate the price using Hull White 1 Factor Model simultaneously?

I am trying to price plain vanilla interest rate swap (IRS) using QuantLib. What I am trying to do is to generate a path of simulated IRS price by simulating the interest rates using HW 1 Factor model....
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37 views

Time step in Hull white mean reverting model

Specially for mean reverting processes for interest rate simulation. Is it acceptable to directly simulate the paths at say 1 month horizon without stepping through time? Please advice.
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20 views

How do I invest an amount into different annuities that have different interest rates and different payment periods?

I have a fund of \$150,000 that I want to invest for the next year. I want to be paid a monthly income from this fund such that I end up using all of the money through these different monthly pay outs....
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35 views

Valuation on a USD Swap

I had a basic question on the valuation on a USD swap fixed versus LIBOR1M. I know for market practice we would use the USDLIBOR3M swap curve as the discount curve. For the forward curve on the ...
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29 views

Montly and total loan payment when monthly interest varies depending on the length of month

Usually, a monthly loan mortgage payment is calculated using the formula (source): $$paymen\_m = P \cdot rate\_y ~ / \left[ 1 - (1 + rate\_y) ^{-n\_months} \right]$$ Here (and later in the text): <...
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1answer
103 views

Why continuously compounded interest a standard in finance? [closed]

Why is the "continuously compounded interest" the standard in finance? Many finance textbooks use the formula e^rt without justification. The assumption that the interest frequency is ...
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1answer
91 views

How to model fixed-rate loans or mortgages with act/365 but constant payment

My question I have a question on how to model the cashflows of fixed-rate loans or mortgages. Let's say the payments are monthly, and the rate remains constant throughout the life of the product; each ...
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4answers
69 views

corporate bonds - general questions [closed]

Newbie here and not trading IRL but for a school assignment. I want to buy corporate bonds because they are a safe bet from what I read. I have a few questions though, I hope I will find an answer ...
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1answer
65 views

Cap/Floor on a SpreadOption grid

I have a spread option data from a broker. The rows are the following : STK ATM -0.5 -0.25 ... and the values are forward price ( the strikes used are absolute strike and the value of the raw STK is ...
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2answers
95 views

Bond Convexity & Interest Rates [closed]

I am having trouble understanding the convexity of bonds and the relationship among bonds with different convexities. Exactly what is convexity and what is a simple way to For instance, how is it ...
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0answers
50 views

Swap curve is unsmooth at front end with naive interpolation

I am looking at swap curve building at front end and find it difficult to get a smooth forward curve with a fast generic algorithm. For example, EUR 6m curve has 6m deposit, and then a series of FRAs (...
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2answers
255 views

Day count methods and actual coupon payments

Assume I have a bond that pays 5% coupon anually on the last day of the year. The day count method used to calculate accrued interest over time is "days actual / 360". The day before the ...
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1answer
258 views

Swaption PnL approximation/attribution

With a payer swaptions delta and gamma is there a method for approximating pnl for a given move in underlying swap rate? (An equivalent to the Taylor expansion for a vanilla call) Thanks!
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1answer
103 views

Properties of difference between continuous and discrete compounding of interest rate [closed]

The relationship between annual discrete and continuous compounding interest rates is given as: $$1+r_d = e^{r_c}$$ My question is what are the properties of the difference between $r_d$ and $r_c$? ...
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1answer
69 views

Why Bond pricing formula is changed? [closed]

When I first learn about finance, a bond with continuous yield was priced via $$Z = e^{-rT},$$ where $r$ is the yield, $T$ the time to maturity. But, when I learned about stochastic interest rate ...
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2answers
139 views

What is the cheaper IR hedge: Futures or IRS?

Let's take the following idea: Your objective is to hedge interest rate risk. You decide between Futures and IRS: You can sell bund futures (10Y bond equivalent): Price 177.70 Theoretical coupon: 6%...
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1answer
238 views

Simple forward price of a commodity formula

Given the spot price of a commodity C, an annual interest rate r, a time to maturity in years t, and storage and insurance cots to maturity s we can express the forward price (using simple interest) ...
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1answer
80 views

What are "local" and "foreign" interest rate in this formula? [closed]

I found this formula to find fair value of a forex pair: FV = Spot × e(local interest rate−foreign interest rate) × T Taken for example AUDUSD, Spot is AUD per USD. T is the time to maturity of ...
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1answer
27 views

How to solve for effective interest rate of a government bond on HP 10bll+ financial calculator? [closed]

Price of bond = 100.44 Nominal coupon interest rate (compounded annually) = 1.5% Duration: 10 years Face value (what you get back after 10 years, may be poor translation): 100 Spent hours now trying ...
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1answer
119 views

analytical formula for FV of fixed rate of a IRS [closed]

IRS plain vanilla - expiry in 5 years - principal is 1$ - semianual payment How could the analytical formula be derived for the fair value of the fixed rate (initially no value of the swap)?
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114 views

Sharpe Ratio and interest rate

The Sharpe ratio is calculated as the ratio between the return and the volatility. Now, when I have a trading strategy that requires to be invested sometimes and to be flat other times, I assume 0% ...
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0answers
65 views

Does Vasicek interest rate model had any derivation that follows from a list of assumptions?

I can't find that anywhere online and It doesn't seems to me that this model originated come from intuition or some human motivation but rather it is coming from computerized curve fitting as all the ...
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2answers
693 views

OIS, Fed Funds Rate and Working

I'm a bit confused about OIS. Is OIS the overnight interest rate or is it a swap. If OIS is the rate at which banks lend overnight, where does the swap come in? Don't they borrow at a fixed rate? ...
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3answers
244 views

Can you model the LIBOR rate as a geometric Brownian motion?

i.e. The LIBOR rate is driven in the same way as a stock price in the Black Scholes model. For example let $R_t$ denote the LIBOR rate at time t. the stochastic differential equation (sde) would take ...
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1answer
72 views

Why do most interest rate formulas, and indeed finance in general, add 1 to a rate and then subtract afterwards? [closed]

For example, in the formula that shows the relationship between the nominal and effective interest rate shown below, 1 is first added to in/m and then 1 is subtracted from the result. What is the ...
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1answer
805 views

Increasing Annuities [closed]

Olga buys a 5-year increasing annuity for X. Olga will receive 2 at the end of the first month, 4 at the end of the second month, and for each month thereafter the payment increases by 2. The nominal ...
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1answer
601 views

taylor expansion in compounded interest [closed]

You invest $1, 000$ dollars for $10$ years at a $5$% yearly interest rate. After each year the interest paid is reinvested at the same rate. (a) Represent the total amount A after ten years in the ...
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1answer
141 views

How are LIBOR rates beyond 12M arrived at? [closed]

I understand LIBOR rates quoted on a daily basis upto 12 M tenors. But how are rates beyond 12M tenor estimated. I got this question from an interviewer.
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1answer
542 views

Short-Interest Rates Models - Geometric Brownian Motion?

in a paper of Brennon&Schwartz (1977), they model embedded bond options by using an stochastic interest rate model which follows a geometric Brownian Motion. Now they claim that this assumption ...
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1answer
104 views

Variable Loan Interest Question

I have been attempting this question a few times over the past few days but can't seem to make any headway on it. Any help would be greatly appreciated. A loan of €L was to be repaid over a twenty-...
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2answers
156 views

How is the spread between the US-10 T-bond and the Fed funds rate determined?

In 2015 the Fed funds rate was 0.24%, while the US Treaury 10-year government bond was 2.24%. How is the spread determined? Is there a formula to determine the spread of the US-10 T-bond and the Fed ...
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1answer
5k views

Interest rate implied probability of default

Is there an equation or rule of thumb to determine the probility of default for a loan with a specific interest rate? Let's say, a bank offers a company a loan with an interest rate of 6%, by which ...
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1answer
7k views

Calculating the net interest income and net interest margin

The tabel below contains financial statement information from the CBA 2013 annual report. I am asked to find the Net interest income and net interest margain: My answers are as follows: Net ...
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2answers
36 views

I need a low volatility asset that gives an interest/dividen [closed]

I have some cash that needs to sit on an account for some time (less then a year, where I will withdraw an amount every month). I need them in a fixed price/low volatility asset that gives an interest ...
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1answer
616 views

What if: Negative interest on an overdrawn bank account?

Theoretical question: Consider if a bank account had a -12% yearly interest rate, and an account was currently overdrawn to a balance of -$100. What would the bank do to the -$100 balance after one ...
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0answers
461 views

US Rule versus Actuarial Method for calculating interest

I'm trying to understand the difference between the actuarial method and the U.S. Rule for calculating interest. I think the difference is that the actuarial rule adds unpaid interest to the principal ...
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1answer
1k views

Calibration of 1F Hull White short-rate model to market data

I want to calibrate the Hull White 1 factor short rate model to market data. The main purpose is to simulate interest rate paths, which I will use to calculate the net pv of banking liabilities. Some ...
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2answers
361 views

Relationship between interest rate and corporate bond yield?

I have been reading articles on liability driven investing, a technique used to increase the correlation b/w assets and liabilities of a pension plan. It appears that they use AA rated corporate bond ...
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1answer
220 views

Compound interest calculator solving for time with deposits [closed]

I am attempting to solve a compound interest calculation for time given Principal = 100 Time(years) = t Rate(per year) = 8% Deposit(per month) = 5 Total = 300 I ...
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3answers
862 views

CIR model and calibration

I am new to quantitative finance. We know that in the CIR model the short rate can't go negative. My question then concerns calibration of CIR to a ZCB yield curve. Is it (and why?) possible to ...
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1answer
2k views

Is there any template of hull white one-factor calibration model?

Recently I would like to look for excel template of hull white one-factor calibration model using swaption data for my urgent task? However, it seems that I cannot find suitable one in the web. ...
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2answers
2k views

Interest Rate Risk - The Greeks

IR Delta and Gamma. Can someone please explain if my understanding is accurate as relates to a 2yr interest rate swap? You are considered to be long Delta in an interest rate swap if you are ...
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1answer
49 views

Compound and continuous interest in the context of debt

I'm trying to figure out the concepts "compound and continuous interest". This article explains the material very well in the context of a savings account. However, I find it difficult to ...
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1answer
873 views

Why QuantLib assumes zero rates to discount factor is continuous?

https://github.com/lballabio/QuantLib/blob/0ec43027834220baf0a554d68de79a159a2c5489/ql/termstructures/yield/zeroyieldstructure.hpp ...
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2answers
91 views

How do we include inflation in our calculations? [closed]

How do we include inflation in our compound interest calculations? E.g. if we have current principal of 1000$ and the interest rate is 3% after 10 years we have <...
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1answer
5k views

Central bank interest rates: are they quoted annualized?

After a little research on interest rates of different countries I figured out that they are more complicated than I thought and the meaning of them varies country by country. For example, the U.S. ...
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1answer
92 views

Immunization: Whats the best way to hedge my short interest rate exposure?

What's the best way to hedge a portfolio against a rise in rates? Portfolio: long bonds different maturities. a) parallel shift b) convex shift (short and long term rise more than mid term) How is ...
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2answers
62 views

Force of Interest Compounding at Annual Rate i

I'm working through some actuarial practice and am lost as to what's going on with the differentiation here (it's been a while since I've had calc): Derive an expression for $\delta_t$ if ...