In volatile markets, investment managers go to cash. That’s happening right now because of the prime mortgage meltdown. But not all money market funds are the same. Just as there are enhanced index funds, there are also enhanced money market funds.  "Enhanced" meaning the fund manager seeks higher returns by taking slightly more risk. And in the case of enhanced money market funds trying to get extra basis points, this may mean investing in asset-based securities like mortgage-linked bonds. According to, some supposedly safe money market funds have shut down, while others are having problems meeting redemptions.

Do you know where your cash is?