Stocks Online

when your selling stocks online, do you have to wait till someone buys them to sell it?
Like say im trading my stocks online and i sell my 100 stocks i purchased earlier that week….. Do i have to wait till someone buys that company’s stocks to have them sold or do they sell at the time i click sell online? How long does it take for those stocks to be sold usually?
every sell transaction I have ever done (40+ last year) it was bought instantly if not within a few minutes
so long as you are Trading Stocks that are listed on a major exchange there is nothing to worry about –
penny stocks and super low volume trading stocks are the only ones I would be worried about, especially if you try selling a block of one stock that is much larger than an average trading days volume for that stock
How To Buy Stocks Online SAFELY