Master Trust
A collection of funds from individual investors that are pooled together in order to obtain wholesale prices and rates unavailable for regular investors.
Investopedia Commentary
This is kind of like bulk shopping. When you offer to buy more securities, companies are willing to give a better rate. Therefore, a group of investors can combine their assets for greater leverage.
Related Links
Mutual Fund Basics Tutorial
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See also: Mutual Fund, Net Asset Value - NAV, Portfolio, Trust, Trustee