### Comment:
How can they 'manipulate the value of the stocks' ? What's the exact mechanism?

### REPLY:
That's this part, which is more difficult to explain like he has an extra chromosome: 'The hedge funds and HFTs use this info to front run orders and take riskless arbitrage off unsuspecting suckers.' Rather than just copy/paste these writeups: 
  
 * [front running](https://www.investopedia.com/terms/f/frontrunning.asp) 
  
 * [riskless arbitrage](https://investinganswers.com/financial-dictionary/world-markets/arbitrage-2171)

### END.