If quantitative easing is successful in reducing the overall government debt yield curve or injecting money into the system, but there is no trickle down effect to corporate bonds for example, then the central bank can target specific maturities and specific types of debt instruments (corporate bonds OR auto loans, mortgage backed securites, etc.) to achieve the desired effect. (wheredoesallmymoneygo.com)
Money market securites offer safety and liquidity for investors willing to accept a relatively low return. (sapling.com)
For example, a couple of leveraged exchange traded securites are DGP which seeks to produce twice the price performance (double long) of gold bullion as measured by the US Dollar PM fix price for London Delivery and its sister security DZZ, which seeks to do the opposite and is a gold double short. (GoldMutualFunds.org)