Tech: You are the product for zero-commission brokerages https://www.theedgemarkets.com/article/tech-you-are-product-zerocommission-brokerages
%% Fills on ''free'' commissions are good on liquid ETFs.Even though last 30-60 minutes can get wild -it's always been that way.[I think, from reading the annual report, AMTD, ALLY, IBKR, SCHW own a certain % of QQQ+ such anyway, so profit can be more than just a bid ask/spread +routing fee.....] SCHW makes lot off interest/SCHW bank.Good read................................................................................................................