In a letter to the Chicago Mercantile Exchange dated June 3, the Commodity Futures Trading Commission has provided guidance on the potential impact of newly adopted Securities and Exchange Commission Rule 22e-3 on the investment of customer segregated funds, by futures commission merchants (FCMs) and derivatives clearing organizations (DCOs), in money-market mutual funds (MMMFs) under CFTC Rule 1.25. SEC Rule 22e-3 authorizes MMMFs to suspend redemptions if necessary to facilitate an orderly liquidation of the fund.