Hedge funds will oppose proposed rules that will force them to reveal more data about their trading positions to the U.S. government, The Wall Street Journal reports. Hedge funds, including BlueMountain Capital Management and the Managed Funds Association, are concerned that their proprietary data will be available freely and the government will not be able to protect it.

Currently, many managers are required each quarter to publicly disclose their long equity positions in public securities. The proposed rules will require a much higher level of disclosure to regulators about trading positions, counterparties, liquidity, leverage and performance. Regulators will have to keep the new disclosures confidential.

Click here for the story from The Wall Street Journal.