This is the first time I've seen different settlement results from both sides. I wonder if those doing arbitrage are okay? Actually, I've been monitoring both sides before, and Opinion generally settles later than Polymarket. So if Polymarket settles first, and the rules are the same on both sides, you can directly copy the results from Opinion. If you have more than 500 shares, you'll recoup the transaction fees; tens of thousands usually yield a profit of tens of dollars. I don't understand why there are pending orders.

I'd done this a few times before, to inflate trading volume. I noticed that occasionally, there would be tens or even hundreds of thousands of orders placed for a 99.99% price range, waiting to be bought. Strangely, these orders weren't visible on the holdings ranking. Sometimes I'd copy an answer and buy tens of thousands of shares, and immediately appear on the list. So I never understood who was placing those orders...