There are three main parts to Trading Systems. Part One is a short, practical guide to trading systems' development and evaluation. It condenses the authors' years of experience into a number of practical tips. It also forms the theoretical basis for Part
This book is a concise, descriptive and informative source for anyone choosing to develop a trading system.
The tangible value of this book is rather low: much of the information is material that you can find from reading other trader books or doing a web search on trading. The aggregation of the information and how one goes about testing their systems, making sure that they are thorough and when to walk away makes it a valuable resource for those who want to trade quantitatively. I found the explanations and examples of portfolio optimisation to be excellent starting points: I think the reason that most writers fail is that they do not manage to convey the iterative nature and complexity of setting up a trading system properly (its not rocket science, but it is not about picking the right horse either).
It is not pitched for a new trader, rather a new systems developer, from a trader who has an idea they would like to exploit. I liked the healthy dose of skepticism, caution and frank honesty in the writing: There are pitfalls, there are easy wins - here is an outline of how you can develop a good system, but we are not going to tell you what it is. The opaque nature of writing is reassuring - there are edges which you can develop by using the concepts. It doesn't waffle on about how successful you can be, and has sound focus on a technical background without being too mathematical. I consider it a canon read for my trading shelf and a worthy introduction into quantitative trading techniques.
This is a very good work by the authors. As a developer of trading systems with a lot of failures and some successes, I'm increasingly being aware of more and more pitfalls, still this book brought me some very interesting aproaches, which I'm not sure they are widely used.
Good points are the idea of looking for a stable area of parameters when optimizing, checking different timescales for that too.
The authors points to the development of some simple strategies that are time tested and that aren't very susceptible to deterioration on Out Of Sample tests. Also, they warn against the other side, when there is too much curve-fitting.
Walk-forward chapter could use a bit more info, like some minimum criteria for setting your timescale of WFO chunks, like number of trades or such.
On Part III, previous discussed trading systems are applied to a Portfolio level management. Authors advocate using equity line crossovers instead of a drawdown rule to drop strategies, but also shows other money/risk management systems.
Well written book for those algorithmic traders out there.
This is a great book for learning both foundational and more advanced concepts and techniques in strategy and portfolio optimization. I particularly liked the emphasis on rather important topics like degrees of freedom and survivorship bias — acknowledging these and incorporating them to your portfolio development can help prevent costly mistakes down the road.
Although the authors warned against the risks of overfitting, their own strategy development at times appears to contradict this advice, adding additional filters and rules (with some of them later proving to be obsolete). If this was meant to serve as an example of what not to do, that intention wasn’t clearly communicated.
I rather enjoyed the book. Easy to understand and approachable. I will say that I come to this book from a fairly strong scientific and mediocre stars background with minimal financial training. Thus I think I personally found the concepts intuitive if not overly simplistic.
Overall I, as a pure novice, found the book to be quite good and straight forward