Market Order for Buying

For example, consider an instance where in you know the fact that company 'A' will be making a big announcement in the afternoon today and so the price of the stocks of this company will definitely rise after this event. So you are looking for buying this stock desperately now, irrespective of its current traded price. In such a case, you can place a 'market order' for this stock. This will place an order for buying the stocks at the Last Traded Price in the Stock Market. So the chances of buying the stocks increase, as you are trying to buy the stock very close to its Last Traded Price in the market.