$Tesla Motors(TSLA)$ Legit noob question: if a person buys Tesla at 900 & the price drops to 890, the person could buy the dip to do dollar cost averaging (dca); what about someone who had bought Tesla shares at a much lower price, e.g., 500? Would or should this person buy & add stocks at 890? I'm asking because I saw a Tesla stock holder who bought the stock at an average price of 500+ ask in an online forum if he should buy Tesla stocks now & someone told him yes. But when I raised the question of dca as above, the same person didn't reply.
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