# All Questions

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### Setting the r in put-call parity?

Put-call parity is given by $C + Ke^{-r(T-t)} = P + S$. The variables $C$, $P$ and $S$ are directly observable in the market place. $T-t$ follows by the contract specification. The variable $r$ is ...
1k views

### What are important model and assumption-free no-arbitrage conditions in options trading?

In the paper "Why We Have Never Used the Black-Scholes-Merton Option Pricing Formula" (Espen Gaarder Haug, Nassim Nicholas Taleb) a couple of model-free arbitrage conditions are mentioned which limits ...
619 views

### Transformation of Volatility - BS

I have recently seen a paper about the Boeing approach that replaces the "normal" Stdev in the BS formula with the Stdev \sigma'=\sqrt{\frac{ln(1+\frac{\sigma}{\mu})^{2}}{t}} \end{...
1k views

### Why is the ratio of Hi-Low range to Open-Close range close to 2?

I tried it in several symbols and timeframes with the same result: $$\frac {mean(HIGH-LOW)}{mean(|CLOSE-OPEN|)}$$ ...
67k views

471 views

### Understanding CDOs

I watched every documentary on the financial crisis and CDOs, tried to understand Wikipedia etc.. but still not getting the full picture as examples seem to be limited (or complicated). Say Local-...
1k views

### Back office processing for FX trades

Can someone provide (or point me to) a summary of back office processing nuances specific to FX trading? For example, I know that there are several FX-specific risks that must be managed. They include ...
10k views

### Should Sharpe ratio be computed using log returns or relative returns?

I am trying to reconcile some research with some published values of 'Sharpe ratio', and would like to know the 'standard' method for computing the same: Based on daily returns? Monthly? Weekly? ...
2k views

### Effective Euro-USD (EURUSD) Exchange Rate Prior to Euro's Existence

Motivation: I am running a quantitative analysis that requires long-term, exchange rate data. Problem: Does anyone have methods for dealing with the EURUSD exchange rate prior to the Euro's existence?...
372 views

### Is it common to use multiple brokers for risk reduction?

Would it be considered appropriate risk-management or overkill to utilize multiple brokers to manage a given trading strategy? A couple specifics: I'm interested in what a reasonably-sized hedge ...
1k views

### Quantitative Derivatives Trading vs. Time

Most quantitative investment strategies focus on the changing prices of a commodity or equity over time. Derivatives, however, make this more complicated. How can I apply quantitative strategies to ...
4k views

### Quantmod: what's the difference between ROC(Cl(SPY)) and ClCl(SPY)

I feel like I'm missing something fundamental here, but I can't shake the feeling that these two series should be equivalent. /edit: there is also dailyReturn(Cl(SPY)). I've seen all 3 of these ...
1k views

The algorithm is introduced in the paper, Can We Learn to Beat the Best Stock. The obvious advantage is superior risk-adjusted returns (if you can actually achieve them). Transaction costs and ...
20k views

### How do I calculate the delta of a convertible bond?

How can I find the delta of a convertible bond to be used for hedging?
4k views

### How to incorporate technical indicators into neural networks?

I plan to develop a neural network to trade commodities futures, but while messing around with some code, a question came up. If I understand correctly, people use various technical indicators with ...
10k views

### When should we use SWIFT versus FIX?

I've read documents that claim that SWIFT and FIX are not competing protocols for financial transactions and messaging. And yet, I have not come across a clear articulation of when to use SWIFT versus ...
6k views

Using total return calculations is critical in developing security selection models. The standard way to measure total return is to develop a series of price-adjusted data. Investopedia describes the ...
6k views

### Free market data (delayed or snapshot)

I know there are similar questions but I don't think there are any identical ones. Basically, I'm looking for one of these two things. Delayed market data feed. A tick by tick feed, but delayed by ...
26k views

### How are correlation and cointegration related?

In what ways (and under what circumstances) are correlation and cointegration related, if at all? One difference is that one usually thinks of correlation in terms of returns and cointegration in ...
336 views

I have a trading system I would like to test for the S&P 500, or another very similar instrument. I'm looking to make approximately 10-15 trades per month. I know if you have a Vanguard account, ...
5k views

### Equity Risk Model Using PCA

I'm trying to build a simple risk model for stocks using PCA. I've noticed that when my dimensions are larger than the number of observations (for example 1000 stocks but only 250 days of returns), ...
1k views

### When is the LIBOR market model Markovian?

The question is inspired by a short passage on the LMM in Mark Joshi's book. The LMM cannot be truly Markovian in the underlying Brownian motions due to the presence of state-dependent drifts. ...
2k views

### Simulating Returns

I'll start this off with a rather broad question: I am trying to simulate returns of a large number of assets within a portfolio of different classes - equity and fixed income in a first step, say 100 ...
26k views

I'm looking for a clearly articulated description of the difference between trade matching (e.g. Omgeo's CTM) and trade affirmation (e.g. Omgeo's Oasys). From what I understand, they both involve ...
330 views