In mortgage servicing, the term "fractionalization" refers to the splitting of a single loan into multiple loans, each of which is then sold to a different investor. This practice can create opportunities for servicers, but it also poses some risks. Fractionalization can be used to create custom loan portfolios that meet the specific needs of investors. For example, an investor who is looking for a higher return on investment may be willing to accept a higher interest rate, while an investor who is more risk-averse may be willing to accept a lower interest rate. However, fractionalization can also lead to problems if not done carefully. For example, if the different loans are not properly monitored, it can be difficult to identify and correct issues if they arise. Additionally, if the loans are not properly diversified, the failure of one loan could have a ripple effect and lead to the failure of other loans in the portfolio. As a result, it is important for servicers to carefully consider the risks and opportunities associated with fractionalization before implementing this strategy.