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Should I sell my stocks when the stock hits a 52-week high in order to “Buy Low, Sell High”?
I bought 1000 shares of Apple, when it was $5. And yet, while the purchase was smart, the sales were the dumbest of my life.  "You can't go wrong taking a profit" "When a stock doubles sell half and let it ride", etc.  It doubled, I sold half, a $5000 gain. Then it split, and kept going up. Long story short, I took gains of just under $50,000 as it rose, and had 100 shares left for the 7 to 1 split.  The 700 shares are worth $79,000. But, if I simply let it ride, 1000 shares split to 14,000. $1.4M. I suppose turning $5,000 into $130K is cause for celebration, but it will stay with me as the lost $1.3M opportunity.  Look at the chart and tell me the value of selling stocks at their 52 week high. Yet, if you chart stocks heading into the dotcom bubble, you'll see a history of $100 stocks crashing to single digits. But none of them sported a P/E of 12.