Jarsy(@JarsyInc):After the World Cup brought Kalshi @Kalshi and Polymarket @Polymarket into a larger sports audience, the next debate is not only about volume. It is about market integrity. The Atlantic described a new risk as “outsider trading”: when traders may try to influence the real-world event or data point that determines a market outcome. One example: French authorities investigated possible tampering with a weather sensor at Paris Charles de Gaulle Airport after an unusual temperature spike affected a Polymarket weather contract. Axios also reported that several Arizona government entities have moved to stop employees from using nonpublic information to profit from prediction markets. That is the next layer of the category.

2026.07.24 15:00

After the World Cup brought Kalshi @Kalshi and Polymarket @Polymarket into a larger sports audience, the next debate is not only about volume. It is about market integrity. The Atlantic described a new risk as “outsider trading”: when traders may try to influence the real-world event or data point that determines a market outcome. One example: French authorities investigated possible tampering with a weather sensor at Paris Charles de Gaulle Airport after an unusual temperature spike affected a Polymarket weather contract. Axios also reported that several Arizona government entities have moved to stop employees from using nonpublic information to profit from prediction markets. That is the next layer of the category.