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What to do if 'Buy and Hold' Doesn’t Cut it for You

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For people not looking to sit on their stocks as advised in the standard "buy and hold" strategy, market timing is a good option to consider. This is because market timing strategies for buying stocks do not advocate buying stock and just sitting on it for year after year. Indeed, market timing investors do not wait out the lows and sell only when prices are sufficiently high to make a decent return on investment - they avoid the lows altogether and only aim to sell when prices are at their peak. 
Source: http://www.investorguide.com/igu-article-977-stock-strategies-buying-stocks-using-growth-strategy.html