# Kalshi ve Polymarket'ten Önce Iowa Elektronik Piyasaları Vardı

- **Source:** [Planet Money](https://brifing.si/source/b016594b-a3bc-497e-ad10-5c411ca3cd9e)
- **Published:** 2026-06-24
- **Topic:** [Finance](https://brifing.si/c/finance)
- **Original article:** <https://www.npr.org/2026/06/24/nx-s1-5868659/history-prediction-market-forecasting-betting-economics>
- **On Brifing:** https://brifing.si/s/8b148d94-ed47-4ec7-b31a-ca06c1558057



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_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._