The U.S. Securities and Exchange Commission rejected another round of attempts to list exchange-traded funds backed by Bitcoin, blocking ETFs from ProShares, GraniteShares and Direxion on concern prices could be vulnerable to manipulation.
In a trio of orders posted on the agency's website Wednesday, the commission said proposals to allow the funds failed to show how exchanges seeking to list the products would "prevent fraudulent and manipulative acts and practices."
The SEC had already denied a request to list a Bitcoin ETF run by twins Cameron and Tyler Winklevoss in late July, citing a similar rationale. In that case, it wrote that the platform that would have listed their fund failed to prove the underlying market was "resistant to manipulation."