Best Prediction Market Apps for the US Open, Starting August 30th

The US Open begins on August 30, 2026, with two sessions on Day 1. To make things more fun, the best prediction market apps for the US Open have started listing trades and exclusive bonuses to use in advance.

With less than $1, you can purchase "Yes" or "No" contracts for a chance to claim a profit if your prediction is correct. Keep reading as we quickly walk you through the US Open and what to expect, the prediction market platforms we recommend, and the bonuses you can claim and use on the US Open after registering. Let's begin!

Top suggested prediction market site

Overview of the US Open

The US Open is one of the four Grand Slam tennis tournaments held annually in New York City. It is played on hard courts at the USTA Billie Jean King National Tennis Centre in Queens.

The US Open features a variety of tournaments, including men's and women's singles and doubles, mixed doubles, and junior competitions. Many prediction market sites already let traders predict the outcomes of these events, especially in the men's and women's singles tournaments, in anticipation of the August 30th start date.

Best prediction markets to trade on the US Open

Given that the US Open is a very popular event, you will find trading opportunities on almost all prediction market apps. However, some operators do better than others, offering you more extensive coverage, an easy-to-use app, and bonuses that add to the excitement. With that in mind, here are two platforms we recommend.

Polymarket: Best prediction market app for the US Open overall

Polymarket: Pros and Cons

• Provides hundreds of event contracts
• Features an Android and iOS app
• Supports multiple cryptocurrencies

• Services are limited in the US

Polymarket sits at the number one spot for many reasons. This platform offers highly rated dedicated mobile apps for iOS and Android to trade on the US Open. After registering for an account on any of these apps, you will be eligible for $20 in trading bonuses after you deposit $10.

With this, you can predict the outcomes of various events in the US Open, alongside other markets in economics, financials, cryptocurrencies, and sports. The operator also boasts many ongoing promotions, which you can learn more about in our Polymarket review.

Kalshi: Excellent prediction app for bonus variety

Kalshi: Pros & Cons

• The prediction market is easy to understand
• Prices are updated in real time
• Multiple reward programs

• No instant customer service replies

Nothing is more fun than trading on a prediction market app that gives you access to numerous bonuses. During our Kalshi review, we received a $10 trading bonus after making $10 in trades. This gave us access to various markets in the US Open, including the men's and women's singles winner, Wong vs Lajovic, among many others.

If you are a College Football fan, Kalshi has you covered too, with options to trade on qualifier games and outright winners. We recommend entering our exclusive Kalshi promo code for College Football week 0 to get the best head start.

Trade on the US Open on the best prediction market apps

The US Open is one of the most exciting tennis events, bringing together the sport's biggest names. To make things even more interesting, top prediction markets are giving you a chance to trade on the events in this tournament for a chance to claim a profit. Polymarket is the number one platform we recommend for getting started, with well-rounded offerings, solid bonuses, and a highly rated app.

However, Kalshi is also an excellent pick if you want more bonus variety. Either way, one of these apps will meet your requirements. If you are ready to get started, click any of the links on this page and follow the prompts!