This is a really good book, which the author teaches the basics of algo trading.
Author focuses most on mean reversion strategies, teaching about cointegration tests, Hurst exponent, etc. There is a point that I don't agree with him, he likes mean reversion more than momentum because he thinks momentum might break up suddenly. Well, there are studies showing that for centuries momentum strategies works, and mean reversion strategies might with a single rare loss wipe your account. At least the author says we must indeed be aware of this. Showing that correlations/cointegrations can be broken.
He advocates more ETF than stocks for mean reversion, due to the possibility that single events on a stock may disrupt the cointegration. Anyway, it has some interesting results on simple mean-reversion models on relative returns. The problem, I think, is that probably the strategies here might even be unprofitable due to slippage and commissions. Teaches how to use the Kalman filter to dynamically update the expected price of an instrument.
Author have some ideas for using an instrument with cointegrates with spot price/return of a commodity, to extract the roll return of the commodity future by shorting it during backwardation or longing it during contango, showing also that momentum models thrive on black swan events (unlike mean-reversion).
He says that intraday momentum strategies has many advantages, pointing to some possible strategies for doing it, like order flow, stop hunting, HFT imbalance, rebalancing of ETFs/indexes, breakouts and opening gap strategies.
Finally, on risk indicators, he likes half-Kelly formula (more explained on his other book), but says that Monte Carlo simulations are better if strategy returns are fat-tailed (trend following strategies). There is a special topic on "Constant proportion portfolio insurance" method
Great book, I highly recommend it.
Average reading time: 6h30m