The securities in an
ETF
portfolio are made public every day, and since those securities also appear in the
index
that the fund tracks, the
subclass
to which the ETF belongs — for instance, small- or large-cap stocks, long-term or short-term corporate bonds — is crystal clear. That means that ETFs may simplify the process of building a portfolio that corresponds to a specific
asset allocation or
diversification
model.
That is not always the case with actively managed
mutual funds.
While mutual fund managers focus on a particular market segment to meet their investment objectives, they may actually shift the makeup of a fund in some circumstances. For example, under certain market conditions some funds may hold a substantial percentage of their assets in cash. Others may seek to improve their returns by buying securities in different segments of the market to take advantage of short-term growth. Such strategies might alter your
portfolio
balance without your being aware of it, or leave you underweighted or overweighted in a particular asset
subclass.
No secrets here
ETFs have a high degree of
transparency
because the fund's sponsor, or provider, announces the contents of the ETF portfolio at the beginning of each business day, generally through the National Securities Clearing Corporation (NSCC).