Questions tagged [finance]

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2answers
356 views

Getting a list of all trading days?

I have a large dataset (taken from Kaggle: https://www.kaggle.com/borismarjanovic/price-volume-data-for-all-us-stocks-etfs/), and I would like to fill in the missing data. To do that I can (1) ...
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1answer
3k views

Fama MacBeth cross-sectional Regression

I am deeply confused right now and hope someone can help me out a bit. I want to replicate part of a paper from Fama/French (2008), Dissecting anomalies, specifically, Table IV "Average Slopes and t-...
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1answer
93 views

Towards a standard day count convention in Finance, what the standard should be?

I recently found out about the multitude of day count conventions in Finance (e.g.wikipedia and stackexchange). As far as I understand the reason for this variety is a long history of diverse usage. ...
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1answer
1k views

Pricing log-contract with Black-Scholes PDE

I was wondering if someone could help me with a problem, regarding the Merton Black Scholes PDE. I have an exam soon and this question on an old exam has been bothering me and a friend for quite a ...
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3answers
185 views

Suppose i want to track S&P500 index using 15 stocks, how do i adjust their weights?

I am given 15 stocks (which is listed in NYSE), and want to track/replicate the S&P500 index. So i am currently have the information about the stock price, and given some capital to invest in (all ...
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1answer
136 views

How does buying back stock affect a company's credit spread?

How does buying back stock affect a company's credit spread? Would it cause it to get smaller? Any clarification would be appreciated.
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1answer
5k views

What are DGTW adjusted returns?

Many papers, e.g. in The Journal of Finance, discuss DGTW adjusted returns (or DGTW abnormal returns) instead of just returns. What are these and how does one compute them?
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3answers
954 views

Given monthly returns of 10-Year Govt Bond, how to get monthly risk free rate of return

I have a list of monthly returns of a 10 year Govt Bond. I am not sure if this is a good proxy for the monthly risk free rate of return. Can somebody suggest how I can derive the monthly risk free ...
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1answer
102 views

How to manage theta, gamma, vega, and delta risk in options market making simulation

I'm just starting to learn how to trade options and as part of an algorithmic options market making simulation I have risk limits for the greeks (gamma, vega, delta, and theta). There are 9 strikes ...
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1answer
90 views

Why Joshi defined option value to be discounted payoff using risk neutral expectation?

Currently I am reading Mark Joshi's The Concepts and Practice of Mathematical Finance. At page $59,$ the author mentioned the following. Instead of requiring that every portfolio should have ...
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1answer
191 views

Calculate the price at time t=0

Assume the risk-free bond Bt and the stock St follow the dynamics of the Black & Scholes model (with interest rate r, stock drift $\mu$ and volatility $\sigma$). Calculate the price at time $t = ...
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1answer
43 views

Do not understand 'The gain (loss) on the stock position would then tend to offset the loss (gain) on the option position' [closed]

Currently, I am reading John Hull's Options, Futures and Other Derivatives. On page 401, the author mentions the following: Suppose that the delta of a call option on a stock is $0.6$, stock price ...
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1answer
95 views

Modeling mortgage loan defaults

I have a machine learning model trained with a list of mortgage features that include macro variables where the field to predict (the label) is "Mortgage Defaulted" = 1 or 0 (Yes or No). Now, I need ...
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2answers
138 views

Financial Statement Analysis [closed]

So i have just completed a beginners course on understanding financial statements. As part of the final assignment, we are supposed to pick a real company, study its financial statements and conclude ...
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1answer
476 views

Portfolio Variance - Explanation for equation : Investments by Zvi Bodie

Source: Investments 10th Edition by Bodie, Zvi. Page 227 Chapter 7 In Equation 7.17, the book breaks the variance into two parts. I can't seem to understand why the 1/n is represented outside the ...
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1answer
179 views

CCAR Shocks Scenario

I was going through CCAR-2018-severely adverse market shocks file and under the tab: Equity by Geography, I found these shocks. I have two questions: 1) Whether the shocks to Vol points are in % ...
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2answers
245 views

A definition of quantitative finance [closed]

I would ask a sort of "philosophical" question. Is there any author who gave a scientific definition of this subject? Is it considered a branch of mathematics or does it primarily concern economics? ...
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2answers
6k views

What are the properties of Max and Min functions?

I am having trouble understanding the transition from the third line to the fourth line. I see how it works through cases, but is there a general property that allows this?
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1answer
65 views

Why is the discount function non increasing if pure cash holdings are feasible?

I am struggeling with the question, for example lets take a swap with rate of 3.2 for one year and 3.6 for 2 years and Discount Factor 0.96899 for the first year and 0.93158 for the second year. ...
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1answer
4k views

How to apply Ljung Box Test?

I am checking the closing prices(about 9000+ prices) of the stocks data to test for randomness. The test I am using is Ljung Box test, in MFE toolbox for MATLAB, I used 300 data of closing prices, ...
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1answer
42 views

Do the wallet weights with the minimum variance need to be nonzero?

I wonder if we have n risky assets, does the portfolio with the minimum variance always have non-zero weights or can any weight be 0?
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1answer
52 views

Accounting profitability [closed]

Can anyone please help me how to solve this problem? Grocery Freshly want to open a new store. They expect an initial cost of 30,000 to buy the property in which the store will be. After ...
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1answer
78 views

Adjusting your delta hedge when the stock crashes and were originally delta hedged

You are long a call option on a stock and you are delta hedged. The stock crashes in price. How do you adjust your delta, do you buy or sell stock? Could answers please be quantitative (i am getting ...
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1answer
89 views

Justify a backward differential equation

Regards of 4.5.1, how we get 4.5.5?
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2answers
91 views

Instantaneous change in value of portfolio

I am trying to figure out an intuitive explanation for the instantaneous change for the value of a portfolio (essentially I'm creating a self-financing portfolio to replicate a derivative payoff). ...
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1answer
65 views

0.0006 r-squared after trying to test whether the intercepts differ significantly. Did I do it wrong?

I am trying to test if the intercepts of two linear regression (CAPM) differ significantly or not. I have 2 fund's monthly return in the same period and regress them on the same market variable (MKT = ...
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1answer
217 views

How does buying a CDX and then taking a short CDS position generates alpha? [closed]

Can someone please explain to me how buying a CDX and then taking a short CDS position generates alpha? I am so confused.
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1answer
135 views

Reducing pricing errors (Alpha) in the CAPM with Bitcoin

I have been trying to examine, using the CAPM, if Bitcoin belongs in the market portfolio or not. With 10 industry portfolios from http://mba.tuck.dartmouth.edu/pages/faculty/ken.french/data_library....
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2answers
1k views

Relationship between CML and SML

I am referring to the book Sharpe et al. (1998), Investments, 6th Edition. I am trying to wrap my head around some lines from the book, pertaining to Security Market Line. It reads: Earlier it was ...
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1answer
54 views

Equal Weight better sharpe than Tangency portfolio

Could you explain to me what it means to have better Sharpe Ratio in Equal Weight portfolio than tangency portfolio (max sharpe). Thank you.
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1answer
35 views

How to measure the impact of regulation on fund fees?

I want to measure the impact of mandatory disclosure on inducements on fees. I thought about doing a difference-in-differences analysis around the date of the new regulation with mutual funds as the ...
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1answer
137 views

Questions related to Sharpe's return-based style analysis

I have been reading about Sharpe's return-based style analysis, which tries to determine the manager's exposure/effective asset mix to changes in the values of the asset classes. It does so by using ...
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3answers
3k views

How to convert weekly data to monthly in r (or in Julia)

I have weekly series on financial risk index data as follows: DATE NFCIRISK 1/8/1971 0.58 1/15/1971 0.61 ......through 10/6/2017 -0.88 10/13/2017 -0.89 10/20/2017 -0.89 ...
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1answer
254 views

What causes discontinuities with stock prices

With reference to the figure above, why is it that the price at which the stock closed at on monday not equal to the open price on tuesday? Is this discontinuity due to an adjustment in the price to ...
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1answer
47 views

Binomial Model, Number of nodes from $t = 0$ to $t = n$

How many paths are there in a binomial model from time $t = 0$ to time $t = n$? How many nodes (states) are there? Intutively it seems that there are $2^n$ paths and $2n - 1$ nodes. But I am not sure ...
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3answers
413 views

Best known performance of stock prediction algorithms

I asked this question here and was directed to answer it on this stack exchange. My question is very simple. What is the best [known] performance of a stock prediction algorithm? I've seen papers ...
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1answer
97 views

What is more likely effect to call and put prices, respectively, if the stock price decreases by$1?

The current stock price is \$80.Call ,and ,put, options, with ,exercise ,prices, of $50 and 3 days to maturity are currently trading. What is more likely effect to call and put prices, respectively, ...
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2answers
779 views

how negative rates (mr and rf) affect CAPM

I don't understand how the negative rates factor into this and what it means in the market ...
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2answers
314 views

Linear combination of geometric Brownian motion

Let $X_t= e^{\left(\mu-\sigma^2/2 \right)t+\sigma W_t}$ be a geometric Brownian motion with drift $\mu$ and volatility $\sigma$. I am trying to find an analytical solution to $$\mathbb{E}\left[ \max(...
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2answers
218 views

Using IRR to calculate future value of cashflow

Discounting a cashflow using given forward rates will result in the following present value: PV = 102.875 = ${5\over (1+3\%)}$ + ${5\over (1+3\%)(1+4\%)}$ + ${105\over (1+3\%)(1+4\%)(1+5\%)}$ where ...
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1answer
385 views

How to use WACC for investment?

How to use a value of WACC? I have calculated WACC of company to be 7%. What if company had smaller or bigger WACC? Which one would attract investment?
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1answer
67 views

Vega of binary option

I'm calculating the greeks for a hypothetical binary option, and I'm getting a symmetrical parabola for the vega's of both put and call options that are OTM, ATM, and ITM. Both of them dip into ...
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1answer
47 views

What should I use as a proxy for the risk-free rate? And how do I transform the yearly risk-free rate to the weekly risk-free rate?

In order to calculate the Sharpe Ratio, I need the risk-free rate. What is the most convenient proxy for the risk-free rate? And how do I transform the yearly risk free rate to a weekly risk free rate?...
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1answer
73 views

Understanding Fama Macbeth Regressions of Returns

I'm trying to understand what the Fama-Macbeth regressions of returns actually mean. The source of confusion is a 2013 Novy-Marx paper, in which he states the following: "The first specification of ...
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1answer
79 views

What is the difference between volatility and dispersion in finance?

I am confuse whether the volatility and dispersion is same or not because are use to measure the risk associated with asset. Even if they are different than what is the relationship between, if exist.
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1answer
82 views

Some interpretation on some plots / statistics

I have been playing with a model just for learning purposes (I don't expect to make any money from the model) but I wanted to get some opinions on what you think are "good" values and some opinions on ...
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1answer
38 views

How to calculate a weighted payback rate and period?

I have a client who borrows and repays money at different times. Assume the following example What is the correct way to calculate the repayment rate and more importantly, the time until repayment (i....
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2answers
185 views

Why is Delta Hedging a Hedge Against Short Position? [closed]

Consider the usual one-period binomial model. The delta-hedging formula, following Shreve's convention, is: $$\Delta_0=\frac{V_1(H)-V_1(T)}{S_1(H)-S_1(T)}$$ Shreve states: "The agent has ...
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2answers
148 views

Find arbitrage opportunity in the given market model

Consider the following 3-period-market-model: The discounted price of the risky asset $S$: How can I find an arbitrage opportunity in this model? I know that there would be no arbitrage if we ...
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1answer
69 views

What preprint repositories are available online?

Besides data sources, what preprint archives are available for academics and practitioners in the fields of Quantitative Finance and Economics? I have subscribed Google Scholar alerts and regularly ...

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