Historically, the S&P600 Small Cap index, has outperformed the S&P500. Source: https://www.spglobal.com/spdji/en/documents/additional-material/sp-smallcap-600-brochure.pdf
And if we look at the current valuation of the index, the index has a much better forward P&E ratio than S&P500 relative to historic terms:
Currently I am investing in the Invesco S&P SmallCap 600 UCITS ETF Acc via de DEGIRO. However, the costs are €2,5 euro per transaction and a yearly €2,5 euro fee. It would be great if the S&P600 would be added to BuxZero from a cost basis perspective.
Name: Invesco S&P SmallCap 600 UCITS ETF Acc
Stock Exchange: Xetra, London Stock Exchange
There are also two other etf’s that follow the S&P600 Small Cap index. More info on that can be found here: https://www.justetf.com/en/find-etf.html?groupField=index&index=S%2526P%2BSmallCap%2B600 though they have a much higher intrinsical cost. They offer better liquidity though.