One of my favorite DeFi strategies lately has been prediction market arbitrage. It's a great way to make solid profits while also farming Polymarket's upcoming airdrop. Here's how it works: • Go to @opinionlabsxyz or Polymarket • Find an identical prediction market that is available on both platforms • Check if there's a spread difference between the odds for that market on the two platforms • If you can buy YES + NO shares for less than 99.9c, then do it to lock in a profit When that prediction market expires, it's guaranteed that each 1 YES + 1 NO share will be worth $1 regardless of the outcome. Here's an actual example: On Polymarket, you can bet that Apple will release a new product line before 2027 by buying YES shares at 85c. On Opinion, you can buy NO shares for the exact same market at 11.4c. Buy the same number of YES shares on Polymarket and NO shares on Opinion, and you will lock in a profit as 85c+11.3c=96.4c and is less than $1. If you invest $1000, you'll make $36. Now ideally, you want to use this strategy only for markets that expire soon (within 2-3 months at most), so you don't have to wait too much until you can collect your profit. You can read the market rules to see the end date. You can find opportunities like this in 2 ways: • Manually - search the identical markets on Polymarket and Opinion, and see if there's any arbitrage opportunity • Automatically - A tool like AlertPilot dot io built by @securezer0 uses AI to automatically find prediction market arbitrage opportunities In this example, AlertPilot requires paying a subscription, but if you want to do arbitrage with significant capital, it might be worth it. Why do I believe that arbitraging prediction markets is a good idea? Because with this strategy, you not only make a decent profit, but also farm Polymarket and Opinion. If Polymarket launches a token, it could easily do the biggest airdrop of 2026. The valuation of Polymarket's latest funding round is $9 billion. Let's say that its token has a $10b FDV at launch and there's only a 5% token airdrop allocation. Its airdrop will still be worth $500M. A $500M airdrop would be massive given that Polymarket TVL is only $353M at this moment. And I think that Opinion airdrop will also be pretty good. I strongly believe that farming prediction market platforms will pay off tremendously.(The DeFi Investor 🔎)