Polymarket vs. Kalshi
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See where the two biggest prediction markets disagree. Pick any two markets, or start from the biggest gaps below: prices, volume, history and the resolution rules, side by side.
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Mary Stoiana vs. Katerina Siniakova: Total Sets O/U 2.5
0%
▼ 22.5pt
Vol $2 today · $2 total
Informational only — not financial advice. Odds are mirrored from each platform and may lag the live order book.