How do financial institutions help individual savers diversify their portfolio risks? Which type of financial institution is

Question:

How do financial institutions help individual savers diversify their risks? Which type of financial institution is best able to achieve this goal?
Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...