> HFT isn't even that harmful. What's harmful is brokerages that hold large portions of financial instruments who take advantage of customers' live buying and s

> HFT isn't even that harmful. What's harmful is brokerages that hold large portions of financial instruments who take advantage of customers' live buying and selling with delayed swaps, intentional front running, etc HFT does very similar things, except it's even more opaque to those not doing it. Large financial firms and exchanges sell their order data to HFTs. If you're interested in a deeper dive on what they're doing, a book like Flash Boys will explain how there's a lot more going on than just a quicker network connection.