Has your broker ever told you that a stock is "overbought" or "oversold"? He probably went on the explain that the stock you own (I hope you didn't) had gone down so far that it now was oversold and due for a rally. He might also have encouraged you to buy an equal amount to "dollar cost average" your position so that when ("if"- he didn't say that, I did)) it did go back up you could "get out even". He might even say you "could make a fortune".
Waiting to get out even is the great trap that is preached by all the big Maul Street brokerage houses. What is even worse is most brokers and financial planners believe it. What happened to all those beautiful company reports sent to you telling how wonderful this stock was before you bought it. Maybe you better read those back to him. Brokerage companies do not want you to sell.
When any stock is going either up or down for any extended period of time it does seem logical that it can become overbought or oversold, but let's examine what that means to your ownership.
The reason a stock started up is because the underlying profit projection is going to produce substantial profits that will make the stock more valuable. At some point it is going to reach a true valuation and should stop advancing. What usually happens is it goes beyond true valuation to what could be called overbought (over valued) and then starts down. You may be encouraged to buy when a particular stock becomes "hot" and everyone is buying it. When all the sheep are buying you want to be a seller or you will also be sheared.
Suppose all this was in anticipation of future profits that did not materialize? Then the rise would turn over and head down. This would be more likely for a smaller company than one of the giants, but giants have been toppled. If any fraud was involved the company might even go bankrupt.
Think back to WorldCom that went to the moon and was finally flushed down the sewer. Did it EVER while it was tanking become oversold for a rally? Not hardly because there was no value. Unless you truly understand how to trade overbought and oversold situations the best thing to do is keep your hands in your pockets.
Beauty is in the eye of the beholder. Overbought and oversold is in the mind of the buyer/seller.