In this post, we are going to construct snapshots of historic S&P 500 index constituents, from freely available data on the internet. Why? Well, one of the biggest challenges in looking for opportunities amongst a broad universe of stocks is choosing what stock “universe” to look at. One approach to dealing with this is to …
If you want to make money trading, you’re going to need a way to identify when an asset is likely to be cheap and when it is likely to be expensive. You want to be a net buyer of the cheap stuff and a net seller of the expensive stuff. Thanks, Capitain Obvious. You’re welcome. …
There are 2 good reasons to buy put options: because you think they are cheap because you want downside protection. In the latter case, you are looking to use the skewed payoff profile of the put option to protect a portfolio against large downside moves without capping your upside too much. The first requires a …
We’ve been working on visualisation tools to make option pricing models intuitive to the non-mathematician. Fundamental to such an exercise is a way to model the random nature of asset price processes. The Geometric Brownian Motion (GBM) model is a ubiquitous way to do this. We can represent the price of an asset at time as …
This post summarises the key lessons of the academic literature that has been published on pairs trading. The key themes are highlighted at the end of the page. Pair Trading Literature Review Gatev, Goetzmann, Rouwenhorst – “Pairs Trading: Performance of a Relative Value Arbitrage Strategy” https://papers.ssrn.com/sol3/papers.cfm?abstract_id=141615 This is the first meaningful academic paper on pair …
One of the things I’ve noticed from staring at the screen all day for the last few months is that most of the large negative returns in US stock indexes have come overnight. What do you mean by “overnight”? The core stock trading session for US stocks is between 9:30 am and 4 pm Eastern …
In today’s post we are going to be extracting CoT (Commitment of Traders) reports from the CFTC website using a pipeline built on Apache Airflow. What is CoT data? The CoT report is a weekly publication which reports the open positions of market participants in the U.S futures market. It’s published every Friday at 3:30 …
In the eye of the recent storm, with VIX up over 50, many traders were looking to “short the VIX” using products like TVIX. “Surely it’s going to coming back down?” Well yeah, it will, eventually, but that doesn’t mean that you can profitably short VIX products. First, some basics… What is VIX? VIX is …
For simulating stock prices, Geometric Brownian Motion (GBM) is the de-facto go-to model. It has some nice properties which are generally consistent with stock prices, such as being log-normally distributed (and hence bounded to the downside by zero), and that expected returns don’t depend on the magnitude of price. Of course, GBM is just a …
Optimisation tools have a knack for seducing systematic traders. And what’s not to love? Find me the unique set of parameters that delivered the greatest return in my ten-year backtest. And do it in under five seconds. That’s certainly attractive. But do you want to hear something controversial? When it comes to the parameters of …
