Investment Company Institute - ICI
Think of your town's Chamber of Commerce. Now imagine that, instead of a kabul of local florists and used car dealers, the group was made up of investment firms. Now you're basically picturing the Investment Company Institute.
The ICI is like a PR nexus for the regulated fund industry. Its members sell things like mutual funds and other investment vehicles. The trade association looks to raise awareness of the industry, and puts out ethical guidelines.