# All Questions

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### Capped Variance Swap // Fair volatility using replication portfolio

I know that the Heston volatility model should be the best approach for computing fair volatility on capped variance swap but is there a way to estimate it from replication portfolio? What I call ...
3 views

### Configuration of control parameters tol and delta in the rsolnp package

I am working with the rugarch package which includes a solver.control argument. I am using the solnp solver. I can pass values for tol and delta. In the rsolnp the authors suggest that the control ...
61 views

### Ito Integral of functions of Brownian motion

How does one show that: $$\mathbb{E}\left[ \int f(W_s)dWs \right] = 0$$ For all $f()$ that are powers of $W(s)$?? I assume that one would have to go via the definition of Ito integral and express ...
33 views

### How do leveraged ETFs achieve their investment objectives?

I am interested in the ways how those leveraged ETFs, e.g. TQQQ, achieve their leveraged investment objective. Questions are around, Do they use stock options of the underlying asset primarily to ...
23 views

### Using Timeseries DB for Tracking Asset Performance over time

I am building a system that allows users to purchase digital assets, and i would like to know the asset's performance of individual users. A user may purchase an asset multiple time in a single day, ...
32 views

### Simulating the Rough Heston

I found this paper here https://arxiv.org/abs/1810.04868, "The Lifted Heston", but since I'm not an expert in stochastic volterra processes , nor in fractional ricatti equations, the math is ...
26 views

### What is the formula for the global minimum variance portfolio with positive weights?

I know how to algebraically solve for the weights when short selling is allowed but I can’t seem to find the formula for when it’s strictly positive an the weights sum to 1 anywhere online.
32 views

### Ultrashort ETFs and YTM

Currently I hold the ETF JPST with steadily declining yield. For example, the last published YTM was .81 on 6/30/20, and the most recent SEC daily yield was .57 on 8/7/20. My question, with JPST as ...
48 views

### FED rate cuts don't exist

I would just like to confirm my understanding of how the FED controls interest rates. In my view there's no such thing as changing an interest rate. Because rate/yield is just an effect of price ...
23 views

### Consistent offset/lag in time-series prediction using Neural Network (all code provided)

I'm using a neural network (keras package) to predict Bitcoin prices 48 hours in advance. The issue is that for some reason, my predictions are "correct" but they are lagging behind the true ...
43 views

### help with derivation of equation 8 in Derman and Kani's binomial tree for local vol

in this paper "The Volatility Smile and Its Implied Tree" - Derman and Kani 1994 i understand the derivation of all equations up to 7. But eq 8 i cannot figure out how to derive! i have ...
39 views

### Calculate annualized returns and annualized volatility from monthly returns?

I have a dataset with monthly returns (In decimals) Jan-2008, Feb-2008 .... Dec-2008, Jan-2009 .... Dec-2017 This is what I have done, ...
48 views

### What do large weights above 1 in a portfolio represent?

If I have a portfolio consisting of weights -12,11,3,-2,5,-5, I know that negative weights correspond to shorting but what do these large weights represent? I thought the weights are the proportion of ...
79 views

### Quantlib: How do I price a ZC bond using the Hull White model?

I am trying to use QuantLib to model short rate and looks like QL has some material here http://gouthamanbalaraman.com/blog/hull-white-simulation-quantlib-python.html I have been able to simulate ...
46 views

### Quanto CDS- basic question- [closed]

Just wanted to know if the quanto CDS hedge each other or not, if we assume that the quanto ratio is 100%(1). Also, is it true that in stressed condition the volatility of CDS with home ccy decreases ...
56 views

### Why is the liquidity of ATM stock options often relatively low even if the underlying security is being traded in large quantities

I am currently trying to learn more about options trading and option strategies. One thing I have noticed recently is that for a lof of stocks I look up on yahoo finance often a very low open interest ...
53 views

### FX convertability modelling: have FX markets ever closed down?

I am working on modelling the risk that a bank's cash in one currency could not be converted into another currencies. This convertability risk has liquidity implacations for the asset liabilities ...
25 views

### Do asset return correlations have strong non-linear interactions? [duplicate]

If I compute the correlation matrix for $N$ stocks or indices, are there always expected to be strong non-linear dependencies between each asset pair-wise? Or are there only linear dependencies in ...
30 views

### Is there a performance measure for the entire efficient frontier?

The Sharpe ratio is an example of a performance measure for individual mean-variance efficient portfolios, regardless if they maximize the Sharpe ratio or not. The efficient frontier, however, ...
83 views

### Do basket options have a closed form valuation formula?

Suppose I'm simulating a European call option on a basket consisting of N stocks with slightly varying volatilities but all other parameters remain the same. From the perspective of an estimate, it ...
27 views

### Why do only portfolios of indices show elliptical dependence?

Elliptical distributions imply an asymmetric relationship between variables such as financial returns of different assets. I'm guessing this is mainly due to skewness, although I might be wrong and ...
20 views

### Secured Overnight Financing Rate (SOFR) ISIN

Does anybody happen to know the ISIN of the Secured Overnight Financing Rate (SOFR)? I can't find it anywhere on the NY Fed website.
61 views

### Under Put-Call Parity, why do we add the cost of carry to Call prices but subtract them from the Stock price and Put prices?

In Natenberg (1994) Chapter 11 he outlines the Put-Call parity relationships. ...
69 views

### How to simulate Poisson and Compound Poisson process

someone knows, maybe websites / blogs where I can find tips (preferably ready codes) to simulate the trajectory of processes? So far I only need the Poisson process and the compound Poisson process ...
163 views

49 views

### Good ways to select best decision among N decisions, each with a profit/loss distribution? [closed]

I'm working on a problem where an asset owner (e.g., owner of a factory, power plant, etc.) can take a number of possible decisions (say 10). Each of those 10 decisions entails certain actions, but ...
16 views

### Discrepancy for apple insider trades between Yahoo finance and other sources

https://finance.yahoo.com/quote/AAPL/insider-transactions/ https://www.marketbeat.com/stocks/NASDAQ/AAPL/insider-trades/ Yahoo says there is insider net buying over the past 12 months. Other sources ...
45 views

### Difference between IR01 and DV01? [duplicate]

So I understand that both measure interest rate sensitivity, however, DV01 = duration * notional * (1 bp change in YTM) / 10000 IR01 = ?? I understand it also reflects the value when 1 bp change in ...
34 views

### TD Ameritrade “Get Orders By Query” API call documentation/help

First time to algorithm trading, python, and Quantitate Finance so apologies up front. I have noticed a lack of any good documentation for the TD Ameritrade API anywhere and especially with any of the ...