Stocks that have significantly increased in value due to a large volume of demand are called overbought. This is often the case when there are many more buyers than sellers, whose actions to gain exposure to the asset — come what may — push the price up so high that it can no longer be justified by the company's underlying financials. Another common scenario that causes stocks to become overbought is when a business buys back its own stocks. Just be careful when buying overvalued stocks, as there could be a retracement.