Insiders Are Cashing In on Prediction Markets - The Journal Recap

Podcast: The Journal

Published: 2026-02-17

Duration: 24 minutes

Guests: Caitlin Ostroff

Summary

Prediction markets like Polymarket and Kalshi are gaining popularity, allowing users to bet on events using potentially non-public information, raising concerns about insider trading.

What Happened

Prediction markets such as Polymarket and Kalshi are allowing users to bet on everything from sports to geopolitical events. A notable case involved a user who placed 19 bets on the Super Bowl, winning nearly $17,000 by correctly predicting outcomes, raising suspicions of insider knowledge.

These platforms are democratizing the ability to bet on events previously inaccessible to the public. However, the potential for insider trading is significant as people can trade on non-public information, like geopolitical tensions or corporate decisions, to make substantial profits.

The legality of these markets is in question, particularly concerning insider trading. While traditional stock markets strictly regulate such activities, prediction markets operate in a gray area with less clear guidelines from regulatory bodies like the CFTC.

Polymarket allows users to trade using cryptocurrency and has a global platform that can be accessed via VPNs, potentially bypassing US regulations. In contrast, Kalshi operates legally within the US, requiring user identification to curb insider trading.

Examples of potential insider trading include bets on geopolitical events like the Israel-Iran tensions and the ousting of Nicolas Maduro in Venezuela. These cases highlight how sensitive information can be exploited for financial gain, sometimes even involving military or government insiders.

The episode also discusses the risks of prediction markets, including the potential for manipulation by those with inside knowledge or those involved in the events being bet on. For instance, the CEO of Coinbase, Brian Armstrong, humorously influenced a prediction market by mentioning certain words during an earnings call.

Regulatory bodies are beginning to take notice. The CFTC claims jurisdiction over these markets, asserting their role in maintaining market integrity while acknowledging the potential benefits for society in providing checks on news and information.

As prediction markets grow, questions about their regulation and the potential for insider trading persist. The episode suggests that while these platforms are in their early stages, they will likely continue to evolve and be scrutinized by regulators.

Key Insights

• Prediction markets like Polymarket and Kalshi allow users to bet on a wide range of events, raising ethical and legal questions about insider trading. For instance, one user won nearly $17,000 on Super Bowl bets, hinting at the potential use of insider knowledge.
• Unlike traditional stock markets, prediction markets operate in a legal gray area regarding insider trading. The CFTC is beginning to assert jurisdiction, aiming to maintain market integrity while balancing the societal benefits of these platforms.
• Polymarket's use of cryptocurrency and global access via VPNs makes it challenging to regulate, especially for U.S. authorities. In contrast, Kalshi operates within U.S. legal frameworks, requiring user identification to reduce insider trading risks.
• The potential for manipulation in prediction markets is significant, with instances like Coinbase's CEO Brian Armstrong influencing market outcomes by his choice of words during an earnings call, illustrating the delicate balance between market prediction and manipulation.

Key Questions Answered

How does the podcast 'The Journal' describe insider trading on prediction markets?

The podcast illustrates insider trading on prediction markets through examples of users making significant profits by betting on events with potentially non-public information, raising legal and ethical concerns.

What are the regulatory challenges faced by prediction markets like Polymarket and Kalshi?

Prediction markets face regulation challenges as they operate in a gray area not fully addressed by existing laws, with the CFTC asserting jurisdiction but lacking specific rules for these modern platforms.

How are geopolitical events influencing prediction markets according to 'The Journal' episode?

Geopolitical events, such as Israel-Iran tensions and changes in Venezuelan leadership, have become subjects of prediction market bets, raising concerns about the ethical implications and national security risks of trading on such sensitive information.