Ask HN: Anyone trading prediction markets programmatically?

4 pointssharp_runner_841d ago2 comments

Been building automated systems to compare prices between Kalshi and Polymarket on the same events. The spread between venues on sports contracts is surprisingly wide - sometimes 5-8 cents on identical outcomes. Curious if others here are doing similar cross-venue work and what your stack looks like. Im running Python/FastAPI with direct websocket integrations to both platforms.

2 comments

doing_analytics18h ago

I’ve given it a go, the main issue I’ve found is historical data is near impossible to get prior to even this year. I’d happily pay for it but it doesn’t even go far back. So you have to run live scrapers which will take some time to build a good historical dataset.

grahammccain1d ago

I know someone who is trading daily weather temperature predictions on prediction markets and using the best weather predictions he can find. It thin markets but I think there is some edge there.

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Ask HN: Anyone trading prediction markets programmatically?

4 pointssharp_runner_841d ago2 comments

2 comments

doing_analytics18h ago

grahammccain1d ago

I know someone who is trading daily weather temperature predictions on prediction markets and using the best weather predictions he can find. It thin markets but I think there is some edge there.

j / k navigate · click thread line to collapse