Money Market funds vs ETF

Money Market Funds -a type of mutual funds investing in low-risk securities -usually treasuries, CD, and CP -total net assets $2.5 trillion ETF -fee-based accounts, annual fee fixed or based on assets -pegged to sales commissions asset or -liquidity is a concern, as one fund blow up, the whole industry will take a shock so everyone runs for exists. -ETF represents a significant portion of total trading volume on stock exchanges - 14% of the total activity -Bond ETF is also available, such as iShare from Barclays