[Chardok]

Your reasoning seems to ignore the evidence in this article; there does seem to be a business model of fraud and, even if he did lack a fundamental understanding of the stock market, I would hope we could all agree that action needs to be taken to regulate and restrict these illegal practices. Perhaps it would not be the specific terms Sanders was describing, but unfortunately he was the only viable candidate that ostensibly wanted to do so.

[dsacco]

> Your reasoning seems to ignore the evidence in this article; there does seem to be a business model of fraud

What evidence? Specifically, where do you see any evidence?

The article is filled with emotional appeals, doesn't quantify its "calculations", conflates queue size with a lack of liquidity, professes obvious and heavy-handed hero worship for Brad Katsuyama and IEX, and (to top it all off), claims that high frequency trading is front running.

Frankly, I'm shocked it was even published, even as far as op eds go. The article perpetuates the same tired FUD about high frequency trading that IEX continues to push out, and in doing so preempts reasonable discussion about the real negative externalities caused by HFT. The author either doesn't understand, or willfully misconstrues the way in which HFT operates.

[arielb1]

The main criticism of HFT I have heard is that it makes life harder for institutional investors, which makes them less likely to take effort to invest well.

[vostok]

This article is a pretty transparent advertisement for IEX.