Please be more specific, the article doesn&#x27;t appear to say anything other than that Jump has no interest in talking about themselves to outsiders (and why should they? They have no customers, they have no reason to publicize themselves). I don&#x27;t see anything negative in the article.<p>My examples are HFTs because those are the firms that make the largest number of bets per day, so they have the highest chance of having a day end up being positive (law of large numbers). That&#x27;s why all the top HFT firms have ~100% positive days. Do you believe that no HFT firms have a legitimate positive edge? If so, do you have any proof that e.g. Jump&#x2F;Tower&#x2F;HRT have an &quot;illegitimate&quot; edge?