Polymarket and Kalshi announce $50+ promo codes for Prime Day prediction markets

Verified Polymarket and Kalshi promo codes are confirmed active on the final day of Prime Day week — $70 to trade on ...

$50 Polymarket promo code “MASS” updated thru Prime Day Week for World Cup matches on Wednesday

Polymarket is offering a $50 bonus with code MASS for new users during Prime Day Week, coinciding with World Cup matches.

Kalshi and Polymarket “referral codes” upgrade $50+ bonus through Prime Day; Updated PGA and World Cup odds

Verified Polymarket and Kalshi invite and promo codes are confirmed active for Thursday, June 25 — $70 to trade on Polymarket ...

Polymarket upgrades $50 invite code “CUSE” in NY, CA this Prime Day for USA World Cup match

Polymarket offers a $50 bonus with invite code CUSE for new users in eligible states during the USA-Türkiye World Cup match ...