Quote from traderich:
Here is some food for thought about this issue:
As the last poster just mentioned, exit points are very important.
As simple as it sounds, making money is just buying low and sellig high. Of course, the order of each is up to you (i.e. short and buy low).
Here is one of a zillion examples:
Take WFR on Friday, Jan 26, 2007.
Say Joe watches the stock gap up and soar and decides its a great buy and buys at 51.00/share at 9:40 am.
Say Fred is sitting next to Joe and sees he just bought WFR but Fred says he is going to wait for a pullback before buying. Sure enough, WFR drops immediately from 51 all the way down to about 49.50. Fred jumps in at 49.50 and feels like he made a great buy because he just got it for 1.50/share less than his buddy Joe.
So Joe and Fred sit there watching WFR bounce along.
Joe still feels he made a good stock pick and is content to hold on.
Fred on the other hand is very nervous about his trade and sets a stop loss @ 49.20 figuring he got in at a very low price and if it drops down to 49.20 he is cutting out fast before he loses his shirt.
Sure enough, WFR drops past the 49.20 level at about 10:35am and Fred's stop is executed.
Fred tells Joe he better get out and take his 1.80/share loss or lose even more. Joe says "no way, I am not selling for this big a loss, besides I think its a great deal at this price", and Joe doubles up his position.
Fred tells Joe he is sending good money after bad and is an idiot.
Sure enough, WFR heads back up again, and Joe sells off at 3:55 for a tidy sum profit!
This is just one stock on one day. There are literally a zillion other possible scenarios out there.
As you can see from my little story, there are many ways to trade the same stock and make money.
I am sure folks were shorting WFR on Friday and making money, as well as folks being long. As a novice you would say it is impossible for one guy to be long and another being short to make money on the same stock in the same day.
You might also say "how is it possible for a guy to buy a stock at 51 and make money the same day a guy who bought it at 49.50 and lost money."
One last thing to think about: You may or may not have read or heard that the one proven investing strategy is dollar cost averaging.
peace.