Interest
Proportion of Hacker News items mentioning "kalshi" over time.
Mentions
Total number of Hacker News items mentioning "kalshi" over time.
Kalshi Inc. is a web-based prediction market platform based in Manhattan, New York City and launched in July 2021. The platform is used primarily for sports betting, which constitutes more than 90% of the activity on the site and 89% of the site's revenue in 2025. Activity on the site is described as "heavily tied to the sports calendar" by analysts. Read more on Wikipedia