Eventarb

What is Eventarb?

Eventarb is a professional multi-platform arbitrage calculator built specifically for event contracts. Our web tool helps users find and measure price discrepancies across major prediction markets like Polymarket, Kalshi, and Robinhood.

Instead of guessing the math, you can use our system to compare platform prices side by side. By finding price gaps, you can see if there is a secure way to lock in a profit. It provides a simple and clear method to understand your actual returns when trading daily event contracts.

Who is it for?

This calculator is developed for event contract traders, financial students, and casual investors who want to track market data accurately. Whether you trade in a standard binary market or a complex multiple choice market, Eventarb makes the daily calculations easy to read.

It is perfect for users who want to look past the surface price. If you need to calculate your true opportunity cost and see the final spreads with fees included, our system will provide the exact numbers you need before you risk your principal amount.

How it works?

Using the calculator requires only a few fast steps. You start by entering your trade facts into the fields. Here is the process:

• First, type in your total contract length in days and your starting cash or principal amount.
• Next, input the current contract prices from your selected markets. You can easily click the button to add another market to compare more than two platforms at once.
• Finally, click to calculate arbitrage. The tool will process your data instantly to show your potential profit margins after platform fees.

You can also sign up to get our free alerts. This feature will automatically notify you the moment new arbitrage opportunities open in the prediction markets so you never miss a good trade.