[bawolff]

The fact that people make money off of HFT by definition means that the market conditions have changed in those time frames.

[UltraSane]

No, it is proof that they are parasitically extracting money via non-productive strategies like latency arbitrage and order front-running.

[jpfromlondon]

Liquidity provision is valuable though, and it's not really parasitic to exploit inefficiencies, it's not even that profitable a strategy today.

[UltraSane]

It isn't nearly valuable enough to compensate for the wealth HFT extracts from the market.

[jpfromlondon]

your information seems to be at least a decade out of date

[bawolff]

Which is changing market conditions.