sorry i couldnt find the video i intend to link.  it was from...

sorry i couldnt find the video i intend to link.  it was from patrick weiland a youtuber i follow

anyways it was about a free brokerage app called Robin hood.

being accused of selling info to high frequency firms.

https://www.zerohedge.com/news/2018-09-15/robinhood-investing-app-makes-millions-selling-users-data-high-frequencstealing

"So, once again, sorry millennials - Wall Street and Silicon Valley win again. The deception of free trading via Robinhood comes at the hidden cost of poor execution and being frontrun by HFTs on every single trade."