Institutional investors are organizations which pool large sums of money and invest those sums in securities, real property and other investment assets. They can also include operating companies which decide to invest their profits to some degree in these types of assets. Types of typical investors include banks, insurance companies, retirement or pension funds, hedge funds, investment advisors and mutual funds. Their role in the economy is to act as highly specialized investors on behalf of others. For instance, an ordinary person will have a pension from his employer. The employer gives that person's pension contributions to a fund. The fund will buy shares in a company, or some other financial product. Funds are useful because they will hold a broad portfolio of investments in many companies. This spreads risk, so if one company fails, it will be only a small part of the whole fund's investment. Roman law ignored the concept of juristic person, yet at the time the practice of private evergetism sometimes led to the creation of revenues-producing capital which may be interpreted as an early form of charitable institution. In some African colonies in particular, part of the city’s entertainment was financed by the revenue generated by shops and baking-ovens originally offered by a wealthy benefactor.In the South of Gaul, aqueducts were sometimes financed in a similar fashion. Institutional investors will have a lot of influence in the management of corporations because they will be entitled to exercise the voting rights in a company. They can actively engage in corporate governance. Furthermore, because institutional investors have the freedom to buy and sell shares, they can play a large part in which companies stay solvent, and which go under. Influencing the conduct of listed companies, and providing them with capital are all part of the job of investment management.