Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

My investment account is increasingly and significantly underperforming vs. the S&P 500. What should I do?
You say: To clarify, my account is with BlackRock and the fund is titled "MID   CAP GROWTH EQUITY-CLASS A" if that   helps. Not totally sure what that   means. You should understand what you're investing in.  The fund you have could be a fine investment, or a lousy one.  If you don't know, then I don't know. The fund has a prospectus that describes what equities the fund has a position in.  It will also explain the charter of the fund, which will explain why it's mid-cap growth rather than small-cap value, for example.  You should read that a bit.  It's almost a sure thing that your father had to acknowledge that he read it before he purchased the shares! Again: Understand your investments.