6 comments

  • currymj 1 minute ago
    there is some inevitable "insider trading" in commodities markets. for example if you're a giant agricultural company, and you want to hedge the price of soybeans, you have some extremely relevant insider information about the soybean market. but you're still allowed to trade soybean futures. very different than securities.

    if prediction market contracts really are regulated as commodities, then presumably a lot of insider trading must be legal, although there must be limits of one kind or another and probably if you do something really egregious you might be prosecuted under some legal theory.

  • delichon 1 hour ago
    > Clearly, these insiders have figured out a way to cash in on information. Whether that's kosher is out-of-scope here

    To the extent that the value of prediction markets is in their power to predict, insider trading is kosher. Wholesome even.

    • tedsanders 46 minutes ago
      Bribing employees to disclose confidential information entrusted to them is not kosher nor wholesome. I consider corporate insider trading on these markets to be analogous - if you're an employee and you trade, you are selling your employer's info for money. Nearly every employer would fire employees caught giving away confidential information for personal bribes.

      In the stock market, Matt Levine likes to say that insider training is about theft, not fairness. You can be prosecuted for merely sharing info with a friend on a golf course who then proceeds to trade. Your crime is not trading (you didn't even trade), but misappropriating information you were entrusted with and not authorized to sell.

    • PollardsRho 9 minutes ago
      What about bets without insider participation, where you want the market to function as an aggregator of educated guesses? OP has one reaction to insider trading, but I imagine a very common alternative would be "those insiders make their money off of bettors like me, I shouldn't participate." Some questions are clearly insider-proof, but I imagine many questions have insiders who don't bet on Polymarket. If Polymarket is going to be a good prediction market, surely it should incentivize people to make predictions on those questions too?
    • moduspol 1 hour ago
      Indeed. For those of us not gambling, it's really quite beneficial.
  • syntaxing 49 minutes ago
    Isn’t this the motivation behind polymarket? To incentivize those that have information to bet as a signal of “truth”. What I don’t get is why would anyone bet on this stuff that don’t have insider information besides those with gambling addiction.
    • kylestanfield 27 minutes ago
      It’s a gambling site. The motivation behind it is to make money through transaction fees. You can bet on sports games too.
    • carefree-bob 48 minutes ago
      It's not just a gambling addiction, but many people consider themselves smarter than the average person, and nature's way of punishing these people is creating things like stock markets and polymarkets.
    • doomslayer999 33 minutes ago
      Because taking high variance slightly negative EV shots is not a terrible strategy when you have a long time horizon.
  • aleksiy123 41 minutes ago
    Out of curiosity, is it possible to see everyone's bets and positions in real time?

    Or is the info only available later?

    I'm guessing that bots predicting insiders and copying positions is already a thing.

    • SamPatt 26 minutes ago
      You can see when they buy or sell a position. It's on the blockchain so it's all public. And yes, copying positions is called copy-trading and it's extremely popular.

      Orders aren't public though. Only the actual trades. This is important because by the time the trade is known by others very often the edge is gone. Especially if you have other people watching the same trader and they all try to copy the trade at the same time.

  • bstsb 1 hour ago
    iirc polymarket doesn't explicitly rule against this, and neither does the law. prediction trading like this operates as "commodities" trading, so they have no obligation to prevent this, and indeed they have an financial incentive to let it continue (assuming others don't leave the platform!)
    • aleksiy123 51 minutes ago
      I would go even further and say that it's a vital part of prediction markets as the intended theoretical goal is accuracy of predictions.
  • ralph84 1 hour ago
    Not sure why the dumb money keeps playing. If you're not the insider the person you're trading against is.
    • pocksuppet 10 minutes ago
      Because you think you can predict the probability of the insider insidering each way and place a bet before they insider
    • doomslayer999 30 minutes ago
      Because its an event contract with a defined upside/downside and time horizon. You know exactly what you stand to lose and gain and when. Makes it a valuable part of some intricate financial strategies.
    • taylorius 50 minutes ago
      "the dumb money"