New traders can use our Kalshi promo code ACTION to get $25 in bonuses ahead of today’s US Open second round. The male defending champion Carlos Alcaraz meets Jaime Faria after a return win over Roman Safiullin. Two-time defending champion Aryna Sabalenka faces qualifier Polina Iatcenko, and American No. 1 Ben Shelton continues a run that suddenly looks wide open.
Enter the code ACTION at sign-up, clear identity verification, fund the account, then trade $25 in total across any market. Kalshi credits the $25 bonus once those trades settle, and that credit buys contracts across sports, politics, weather, and economics.
Grab the offer now with Kalshi promo code ACTION and enter Day 4 in Flushing Meadows with $25 in bonuses to try your hand.
What Does Kalshi Promo Code ACTION Unlock?
| Detail | Terms |
|---|---|
| Kalshi Promo Code | ACTION |
| Kalshi Welcome Offer | Trade $25, Get $25 in bonuses |
| Who qualifies | New users, 18+ |
| Qualifying trades | $25 cumulative, not one single trade |
| Bonus format | Non-withdrawable trading credit |
| Markets | Tennis, football, baseball, politics, weather & more |
Three key features of this prediction market promo for readers:
- No winning trade required. Volume alone triggers the credit.
- Spread the $25. Several small US Open positions beat one lump stake.
- Timing matters. The Kalshi referral code applies at sign-up only, never after the fact.
How Do You Claim the Kalshi Promo Code ACTION Offer?
- Tap any offer link on this page.
- Type Kalshi promo code ACTION into the bonus field during registration.
- Verify your identity: name, address, date of birth, and Social Security number.
- Deposit funds. Kalshi accepts deposits from $1.
- Trade $25 in total across any markets.
- Collect the $25 bonus and point it at Wednesday's second round.
Why Use Kalshi for the US Open?
Kalshi struck an exclusive deal with the USTA to serve as the US Open's prediction market app partner, effective from the opening of the main draw. That agreement also locks rival platforms out of advertising at the venue and across ESPN's coverage.
Prices double as probabilities for Kalshi US Open markets, so a 35% contract costs 35 cents and pays $1 on a correct outcome. Traders also exit positions mid-tournament, which suits a two-week Grand Slam far better than a locked futures ticket.
Who Leads the Kalshi US Open Markets?
Men's Singles Winner
| Player | Chance | 2026 form |
|---|---|---|
| Carlos Alcaraz | 35% | Australian Open champion, 8-0 at majors, 24-3 career at Flushing Meadows |
| Alexander Zverev | 23% | Roland Garros champion, top seed, 2020 US Open finalist |
| Ben Shelton | 9% | Four titles in 2026 including Montreal, highest-ranked American at No. 9 |
Alcaraz is the consummate favorite here. He completed the career Grand Slam in January as the youngest man in history, then lost 139 days to a right wrist injury before Monday's comeback win. Two US Open titles and a 24-3 record in New York explain the 35 cents.
The Spaniards fortunes have been helped, though, as Novak Djokovic exited in the first round against Mariano Navone, and Jannik Sinner skipped the tournament with a knee problem.
Zverev anchors the opposite half. His Roland Garros breakthrough delivered a first major after years of near misses, and the bracket keeps him and Alcaraz apart until the final. Anything can happen when the trophy is on the line, and Zverev could be a smart fade.
Women's Singles Winner
| Player | Chance | 2026 form |
|---|---|---|
| Aryna Sabalenka | 23% | Two-time defending champion, three titles, 24 straight first-round major wins |
| Coco Gauff | 19% | Cincinnati champion, 40-13 record, 13 career titles |
| Iga Swiatek | 16% | Seven-time major winner, 28 consecutive Grand Slam openers won |
Sabalenka chases history and defends her ranking at the same time. A third straight New York title puts her alongside Serena Williams, and anything short of the trophy costs her the world No. 1 spot. Swiatek arrives as the No. 8 seed after a 6-2, 6-3 dismissal of Wang Xiyu, a seeding that drops her into the same half as Elena Rybakina and Naomi Osaka.
Can I trade with Americans in the US Open with Kalshi?
- Coco Gauff (19%) peaked at the right moment.
She swept Cincinnati without dropping a set until the final, then beat world No. 3 Jessica Pegula 6-2, 6-4 for her 13th career title. She lifted this trophy in 2023 at 19 and made the Wimbledon semifinals in July.
- Ben Shelton (9%) shook off a scratchy opening set to beat Tallon Griekspoor and reach round two.
He collected four titles this season, Montreal among them, and holds the No. 8 seed. Hubert Hurkacz or Damir Dzumhur stands next, with Alcaraz projected in the quarterfinals. American men have waited since Andy Roddick in 2003 for a US Open title, and the departures of Djokovic and Sinner make 9 cents look like the boldest home-flag play on the board.
Kalshi Promo Code ACTION FAQs
What is the Kalshi promo code? The Kalshi promo code is ACTION. New users enter it during registration to trigger the Trade $25, Get $25 in bonuses welcome offer.
Does the Kalshi referral code require a winning trade? No. Kalshi counts total trading volume, so $25 of settled trades unlocks the bonus regardless of results.
Do I withdraw the bonus as cash? No. Kalshi issues the reward as trading credit for event contracts on the platform.
Which US Open markets suit the bonus best? Second-round match winner contracts offer the quickest turnaround. The outright winner markets suit a longer hold.
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions. 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, OH, and WA.
