If you are going trade pennies-TDA is not the best broker-They "self chill" many pennies. They do not like to trade them. Fidelity and others are much better for trading pennies. Another TDA DISADVANTAGE-you must buy at ASK. TDA has the great info-set up an additional brokerage account-keep tda for free L2! Just my 2Cents! I added an additional account YEARS ago when TDA started their restrictions.