# Money Market Fund - MMFs invest in short term bills to ensure liquidity. - It stabilizes its price per share to one unit of currency. If it appreciates, it simply gives you more dividends or more shares. - MMFs still have managers. But their role is to ensure there are enough maturing bonds for you to cash out. - Types - Government MMFs: short-term T-bills and Fed Repos (overnight lending) - Prime MMFs: lending to companies for a short time.