Fidelity is routinely a top contender among brokerages, so it’s not surprising that the broker features a way to buy fractional shares, which it calls Stocks by the Slice. You can start with just $1 and buy shares of more than 7,000 stocks and ETFs listed on U.S. exchanges. You’ll still be able to purchase stocks with zero trading commissions for online U.S. stock and ETF trades, and you’ll also be able to reinvest your dividends in more shares, even fractional shares, whether they’re stocks or ETFs.Securit ...