I use Motif Investing as my broker. Motif allows customers to create "portfolios" of up to 30 issues for one commission ($9.95) regardless of how big or small the portfolios are. And they do this showing fractional shares down to the fourth decimal place. Being able to track performance of fractional shares is important to me making the VV Portfolio tab less than as good as it could be. To quote another request here, "I'd like my VV portfolio to match my brokerage account."