Summary of Flash Boys

Looking for the book?
We have the summary! Get the key insights in just 10 minutes.

Flash Boys book summary


9 Overall

8 Importance

8 Innovation

10 Style


At the flea market, you’re negotiating a price with the vendor for an item you like. You are about to wrap up your deal when someone rushes in, snaps up the item from the vendor and sells it to you for a slightly higher price, pocketing the difference. That happens on market exchanges thousands of times a day in the form of high-frequency trading (HFT). In this revealing, entertaining financial tale, Michael Lewis (author of Moneyball and other bestsellers) explains and criticizes this kind of algorithmic trading. He focuses on Brad Katsuyama, a former Royal Bank of Canada executive, who embarked on a tenacious quest to battle high-frequency trading. Seeing the field through Katsuyama’s lenses leads to personalized, somewhat black-and-white reporting, which may blunt the subject’s complexity. However, Lewis gives his interview subjects a full hearing, including their frequent F-bombs. Some critics allege that the book touts Katsuyama’s exchange (it does), and some question nuances of Lewis’s interpretation (various blogs both debunk the book and debunk the debunkers). Even given the esoteric subject matter, this is worth reading if only because Lewis wrote it; you’ll laugh, feel the excitement, and get engrossed and maybe a bit angry. getAbstract recommends this accessible, challenging saga as a great backgrounder for anyone interested in the workings of Wall Street and the whereabouts of their savings.

In this summary, you will learn

  • How high-frequency traders affect stock markets,
  • How Royal Bank of Canada exec Brad Katsuyama sought to thwart high-frequency trading and opened an alternative exchange, and
  • Why financial programmer Sergey Aleynikov went to prison.

About the Author

Michael Lewis wrote Moneyball and other bestsellers. A contributing writer for The New York Times Magazine, he also writes for Vanity Fair and Portfolio magazine.



Algorithms on the Rise
On October 19, 1987, the US stock market crashed, taking even Wall Street insiders by surprise. Nobody had foreseen it or could explain it. Some of the regulatory adjustments that followed the crash facilitated a still steam-rolling move from fallible human traders...

Comment on this summary

More on this topic

By the same author

Customers who read this summary also read

More by category