I trade futures but have a question for a friend...... he is daytrading AAPL in 100 share lots using TradeStation software and brokerage. On his stop losses (loss or trailing for profit) he keeps telling me he's getting 5-10 cents slippage. this does not seem right to me. Is it? On a large volume stock of AAPL once his stop level is hit, it's moving 5 to 10 additional levels before getting him out of a 100 shares which is a grain of sand in AAPL daily volume. is that normal? thanks.