Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Advice on strategy for when to sell
I bought 1000 shares of a $10 stock. When it doubled, I sold half, no need to be greedy. I watched the shares split 2 for one, and sold as it doubled and doubled again. In the end, I had $50,000 in cash pulled out and still had 100 shares. The shares are now worth $84K since they split 7 for one and trade near $120.  Had I just kept the shares till now, no sales, I'd have 14,000 shares of Apple worth $1.68M dollars.  $130K for an initial $10,000 investment is nothing to complain about, but yes, taking a profit can be the wrong thing. 25%? Was that all the potential the company had?  There's one question to ask, not where is the price today compared to last year or two years ago, but what are the company's prospects. Is the reason I bought them still valid? Look at your investment each quarter as if you were making the decision that day. I agree, diversification is important, so the choice is only hold or sell, not to buy more of a good company, because there are others out there, and the one sane thing Cramer says that everyone should adhere to is to not put your eggs in one basket.