如题

问题如下：

When tracking an index with a large number of constituents and the assets managed is low, a relatively straightforward and technically simple method can be used to build a passive portfolio that requires fewer individual securities than the index. The portfolio construction method outlined is most likely:

选项：

optimization.

full replication.

stratified sampling.

解释：

C is correct.

考点：Portfolio construction

解析: 当要追踪的指数包含的成分股数量很多，且管理的资产水平相对较少时，最常用的是分层抽样方法。