All Questions

81 views

Implications of Black Scholes Plot

I'm pretty new to finances, but I'm heavily into scientific computation. For my scientific computations class, I need to have at least a basic understanding of finances for the presentation I'm going ...
40 views

Delta hedging Question [closed]

What is the delta of a short position in 1,000 European call options on silver futures? The options mature in eight months, and the futures contract underlying the option matures in nine months. The ...
33 views

Why debit and credit impact differently on different type of accounts?

Here is a table that I found in one of the accounting book: ...
67 views

For many probability of defaults models in credit risk it is needed to use data observed from a "full" business cycles. Usually a business cycle is defined as a recurring (not necessarily periodic) ...
145 views

Extrapolating SVI

In his paper Gatheral presents the following parametrization of the implied total variance $w(k,T) = \sigma_{BS}(k,T)^2T$ $$w(k) = a + b\{\rho (k-m) + \sqrt{(k-m)^2 + \sigma^2} \}.$$ Assuming that ...
27 views

How does Fed Qe affect the housing sales in the US? Why does it happen to be that way?

From my research, Fed's Qe should encourage house sales, however the graph shows houses price in the state seem to gradually go down after 2009. Isn't that contradicting itself? Ain't the increase in ...
151 views

Estimating Parameters - Vasicek

The Vasicek model for the short rate $r_t$ is given by the SDE $$dr_t = \alpha(\beta - r_t)dt + \sigma dW_t,$$ where $W_t$ is a Brownian motion under the physical measure. I'd like to compute bond ...
48 views

How to understand this tickdata askvolume and bidvolume fields? [closed]

Here is 1 tick: Timestamp,Bid price,Ask price,Bid volume,Ask volume 20151127 00:05:00:592,1.06057,1.06061,1,1.5 Does ask volume 1.5 mean 1.5 million were ...
79 views

102 views

How many PHD level quant are there in US market? [closed]

How many PHD (economics+finance) level quants are work here in US market?
52 views

What does martingale look like?

I'm doing a simulation of a CRR model and I'm trying to find parameters in order for the successive $S_t$s (stock prices) to be martingale. I'm assuming that if I'd create a function (and picked the ...
48 views

Proper way to calculate the realized indiviual stock sharpe ratio

From the textbook, sharpe ratio is (return-riskfree rate)/risk However I wonder if I can use (return-index return)/risk, where the index acts as the benchmark, to calculate the sharpe ratio? I am ...
70 views

How would I exploit arbitrage if risk-neutral pricing doesn't hold? (Option Pricing)

We are just learning about binomial option pricing, and how the up-factor and the down-factor must match the risk-neutral price. p * u + (1 - p) * d = continuous risk free rate compounded CRR ...
240 views

Computing Pooled IRR from the IRRs of parts

Suppose I have two cash flows: CF1: -10001001001100 CF2: -20020301 I can compute now: IRR(CF1) = 10% IRR(CF2) =-55% IRR(CF1+CF2) = 4.46% Is there a way to compute (or at least get a fair ...
223 views

How to price an option allowing to change a call into a put?

A recruiter asked me this question: Suppose you have the following contract: a call option with maturity T = 2 years the possibility to change this call into a put at t = 1 year What is the price ...
22 views

Price of call (calibration)

I need to understand how we got this : $\forall i \in I$ $C^{*}_{0}(T_i,K_i)=e^{-rT_i}E[(S_{T_{i}}-K_i)^+|S_0]=e^{-rT_i+X_{T_{i}}}E[(S_{T_{i}}-K_i)^+]$ at How we pass from conditional expecation to ...
86 views

Is there a python code for estimating the parameters of geometric brownian motion?

I was trying to find the parameters of GBM but could not find a python code for the same.
27 views

Error using ghyp-distribution function

I want to fit multivariate GH distribution on my data, and then generate simulations for that distribution. Using the instructions given in ghyp package, I wrote following lines of code in R. ...
56 views

CCC-Garch predict

So I'm trying to measure the VaR of 2 stock with a multivariate GARCH model, so im using the CCC model. I need to predict the standard-diviation and the mean but the ...
30 views

nloptr and portfolio replication using Kalman Filter

Let me first say that I am relatively new to R. For a school project I am trying to create a replicating portfolio using a constrained Kalman Filter. I have tried using nloptr without success - I am ...
13 views

Option style with grant date

The following option exercise style is somewhere between American and European: There is a fixed grant date $N_1$ at which you determine at which date $N_2>N_1$ the option will be exercised. So ...
24 views

How to simulate historical performance of a short position of a security?

I would like to calculate with R the inverse return of Bitcoin. My objective is to simulate the historical price and return of a short position opened in Bitcoin. The first method is to cumulate the ...
61 views

Data source for a corporate bond yield curve?

Yield curves are a valuable tool for economic analysis. It is particularly interesting to analyse the difference between Government Debt yields and Corporate Debt yields (credit spreads). This gives ...
165 views

Source for real-time tick data (stock price, etc.) updated every second?

For educational purposes, I'm looking for a source for now's real-time tick data for stock prices, or FOREX, etc., with a 1 second precision. Is there such free data feed? If not, could such data be ...
37 views

Value of a continuous cash flow until a random time

I am trying to compute the present value of a continuous cash flow that lasts until a random time. The rate of the cash flow is denoted by $c$ and the random time is denoted by $\tau$. Then my claim ...
Let $X \sim \mathcal{N}(\mu,\sigma^2)$ under the probability measure $P$ on the measurable space $(\Omega, \mathcal{F})$. We may define a Radon-Nikodym derivative $Z$, also defined on \$(\Omega, ...