MarketWatch.com writes "Cash is king: Wealthy investors turn to money-market funds as they eye market gyrations". The article says, "Despite subprime woes and credit-crunch complications, money-market mutual-fund assets have increased.... Money-market funds invest in high-quality, short-term securities that present minimal risk. These funds are regulated by the Securities and Exchange Commission, which sets strict requirements by limiting the fund's exposure to interest-rate and credit risk."