Vanguard PRIMECAP Core Fund Investor Shares 

This fund, similar to its sibling, PRIMECAP Fund, is managed with a long-term perspective, extremely low turnover, and a well-established investment strategy. The difference is that this fund invests in stocks with both value and growth characteristics, while PRIMECAP focuses on growth-oriented stocks. One risk to note is that the fund may become concentrated in a few sectors, notably technology and health care. Short-term performance may be volatile when these sectors are strongly in or out of favor. This fund may be considered a complement to an already diversified portfolio with a long-term time horizon.