A new wave of exchange-traded funds (ETFs) is emerging, aiming to replicate the dynamics of prediction markets, akin to sports betting. These ETFs, proposed by firms like ProShare Advisors and Roundhill Investments, seek to offer investors exposure to the outcomes of various events, from elections to economic trends.

However, critics argue that these "betting ETFs" fundamentally misunderstand the nature of prediction markets. The core of a prediction market lies in its ability to aggregate decentralized information and reveal probabilities through trading. ETFs, by contrast, are typically designed to track an index or a basket of assets, offering a more passive or actively managed approach to traditional financial markets.

The proposed ETFs, such as the Roundhill Sports Betting & iGaming ETF (BETZ), focus on companies involved in the sports betting industry, rather than the prediction market itself. This approach is seen by some as merely a new guise for old-school stockpicking, concentrating on a specific sector rather than the broader informational efficiency that prediction markets aim to capture. The debate continues on whether these ETFs will truly innovate or simply repackage existing investment strategies.