First I'd like to say that I'm pretty much a newbie in trading shares.
I just had a quick question to ask.
Let's say, you buy $10,000 worth of SDL (for instance) for 21c, then straight after put in a sell order for 21.5c, and when it does hit 21.5c, you would make a profit of around $200 (less brokerage). What's to stop someone from doing this continuously, buying at x cents then selling at (x + 0.5) cents, thus racking up huge profits?
Let's say you do this once a day, wouldn't you be able to earn $1000 in a week?
Is what I just described a perfectly legal thing to do?
Thanks for your input,