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Kalshi caps monthly deposits at $2,500 for traders under 21
Special accounts, trading warnings and parent-facing guides expand protections for the exchange’s youngest adult users.
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Polymarket adds self-exclusion and deposit limits as regulatory pressure grows
The prediction-market operator is pairing sportsbook-style safeguards with Birches Health support and new platform-wide moderation standards.
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Novig codifies a 21+ trading floor in its rulebook
The prediction-market exchange says its new framework builds age checks, self-exclusion, marketing limits and risk monitoring into the platform’s operating rules.