I guess I look at things a little differently. First, I never buy a stock I am not willing to keep for long term (The Warren Buffett philosophy). If I bought a stock today at $50 and something happened in the market to lower the overall industry (not just that single company) in the short term and that stock dropped to $10, I would consider taking advantage of the short term bad news and buy more to get my overall cost down. My decison would be based on how sure I am the problem is "short term."

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