A mutual fund is an investment vehicle that allows investors to hold a portfolio.

共同基金是一种投资手段,允许投资者持有一种投资组合。

耶鲁公开课 - 金融市场课程节选

It's something that permeates the portfolio and, I think, provides really interesting investment opportunities because a lot of the foreign markets are less efficiently priced than those that you find in the U.S.

渗入了整个投资组合,并提供了很有吸引力的盈利机会,因为很多国外市场,没有美国国内市场程度的有效定价

耶鲁公开课 - 金融市场课程节选

Now, underlying our theory is the idea that we measure the outcome of your investment in your portfolio by the mean of the return on the portfolio and the variance of the return on the portfolio.

而理论的基础是,我们通过计算,组合收益率的均值，和组合收益率的方差,来衡量一个投资组合的优劣。

耶鲁公开课 - 金融市场课程节选

Because of the way that we deal with taxes and mutual funds, you can get a tax bill for gains that were realized by the investment manager turning over the portfolio even though you might not have held the shares during the period when the gains were realized.

因为共同基金的收益还涉及到缴税的问题,所以你会有张税单,上面写着基金的收益部分该缴多少税,即使在实现收益的期间,你并不持有基金股份,但还是要缴税

耶鲁公开课 - 金融市场课程节选