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Polymarket US Tests Parlays as Kalshi Banks $25M in Fees

Polymarket US began processing multi-leg sports contracts on Aug. 5 through an API-only beta that never surfaced in its consumer app. The launch lands as rival Kalshi is reported to be extending maker fees to its own par...

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Archive context

Older archive item. Useful for background and entity history, but not a fresh market-moving signal.

Polymarket US Tests Parlays as Kalshi Banks $25M in Fees
Polymarket US began processing multi-leg sports contracts on Aug. 5 through an API-only beta that never surfaced in its consumer app. The launch lands as rival Kalshi is reported to be extending maker fees to its own parlay product, a change its published fee schedule does not list. An API-Only Launch 11 Weeks After Certification […]

Why this matters

Kalshi is showing up inside the Prediction Markets theme, so this story is worth tracking for follow-through rather than treating it as a one-off headline.

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