While there have been a lot of new innovative investment styles hitting the exchange traded fund market, investors should not overlook core strategies to build out the foundations of their investment portfolio.

For example, Charles Schwab has dabbled with fundamental or alternative index-based ETFs to tap into the rising smart beta trend, the ETF provider is more known for its cheap broad market cap-weighted index ETFs.

“We do a lot of thinking per products,” Jonathan de St Paer, Head of Strategy and Product Development at Charles Schwab Investment Management, said at the Charles Schwab Impact Conference. “We focus on having a limited number of products that are going to serve most of our clients’ needs, so [we]  do a lot of research and a lot of vetting before we do anything new.”