I&#x27;m confused. Dark pools (ie, private exchanges) are devices used primarily by giant investment banks and hedge funds to try to load or unload large amounts of stock without moving the market.<p>What point are you trying to make about them? That if we didn&#x27;t have HFT, we wouldn&#x27;t need them? That&#x27;s an argument <i>for</i> HFT, not against.