On Sunday, August 2, 2026, you can use Kalshi referral code ACTION to unlock up to $500 in bonus credits and trade on MLB markets, including Red Sox vs. Dodgers on Sunday Night Baseball. The full MLB slate features plenty of action, but Red Sox-Dodgers is the marquee matchup, with first pitch scheduled for 7:20 p.m. ET on NBC.
The $500 bonus offer is one of the largest available among the top prediction market apps, giving new users a chance to start trading on major sports events. Sign up with Kalshi promo code ACTION today and explore MLB markets in available states, including AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.
How to Claim Up to $500 Bonus with Kalshi Referral Code ACTION
The Kalshi referral code ACTION provides a mystery boost, ranging from $15 to $500 following your first $25 trade. Check out the details below to claim the Kalshi sign-up bonus now:
- Create Your Account & Click our Sign Up Link: Sign up and enter the Kalshi promo code ACTION during registration to unlock the Trade $25, Get up to $500 bonus.
- Complete Identity Verification: Because Kalshi operates under CFTC oversight, you must complete a standard KYC (Know Your Customer) verification before funding your account.
- Deposit Funds: Add money to your account using a debit card, ACH transfer, wire transfer, or crypto (USDC only).
- Place Your First Trade: Navigate to the MLB market and submit your first trade. You can either:
- Use a Quick Order to buy instantly at the current market price, or
- Set a Limit Order to choose the exact price you're willing to pay.
It doesn't matter what prediction market you trade on, as any trade adding up to $25 gets you closer to claiming your bonus offer.
Kalshi Promo Code ACTION Offer Details on Sunday, August 2
The Kalshi promo code ACTION offers a unique reward structure because you won’t know your bonus amount until after completing $25 in trades. Here’s a breakdown of how the offer works and your chances of unlocking the $500 bonus credit.
- 70% get $15
- 24% get $35
- 5% get $75
- Less than 1% get $100 or $500
Kalshi Odds for Red Sox vs. Dodgers on Sunday Night Baseball
Kalshi lets users trade on game outcomes through event contracts that range from 1¢ to 99¢, with prices reflecting the market's estimated probability in real time. Multiplier odds are also available as markets shift. Below, see the latest Kalshi odds and market probabilities for the Red Sox vs. Dodgers matchup.
- Moneyline: Red Sox 38% | Dodgers 62%
- Run Line: Red Sox +1.5 (55%) | Dodgers -1.5 (45%)
- Total: Over 8.5 Runs (49%) | Under 8.5 Runs (51%)
Why Use Kalshi Referral Code ACTION for MLB Today
The Kalshi promo code ACTION stands out among the best prediction market promos, giving new traders access to up to $500 in bonus value. Available in most states, Kalshi offers plenty of MLB prediction markets for today's slate.
Don't miss your chance to claim this welcome offer and trade Red Sox vs. Dodgers markets at 7:20 p.m. ET on NBC.
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.


