Assuming the transfer from the checking account to the brokerage account is instant, this can give you a lot more liquidity to your stocks. Traditionally, I hav

Assuming the transfer from the checking account to the brokerage account is instant, this can give you a lot more liquidity to your stocks. Traditionally, I have to set aside few thousand dollars that I'm absolutely sure I won't need anytime soon, transfer it to a brokerage account, wait few days, remember to check if then money is in, buy the stock, then reverse the process to sell the stock. The round trip of money in checking account to owning a stock took few days but now it can be done under a minute for free. Investing day to day with the money in your checking account is probably not a recommended personal finance practice but I definitely have more money in my checking account than I probably need this month because moving money is too painful.