<prompt> Human: Im thinking maybe Schwab or Vanguard. Id like to buy individual stocks and mutual funds and ETFs, etc., likely one transaction a month with no trading, partly through a Roth IRA and partly outside tax-advantaged structures. I dont need slick trading platforms or research, and would obviously like the lowest overall cost possible.  <response>: Vanguard on fund feesFidelity Schawb both offer free etf trades. schawb has many etf options including the market leading spdr spy. Fidelity just offers ishares and some obscure fidelity sector ETFs for no fee.I think both allow trades of any security for 7.95 