Too much of a good thing can apply to equities exposure, and with exchange traded funds (ETFs) like the Invesco S&P 500® Equal Weight ETF ( RSP B+ ), holdings get equal billing to help balance portfolios. As Invesco’s website puts it, RSP prevents investors from “putting your eggs in one basket.” It can be easy to fall into the trap of allocating too heavily into one or more stocks to extract maximum gains, such as big tech heavy-hitters like Apple or Amazon.