That is great if you have the shares in your 401K. Mine does not allow me to invest in individual stocks. So what I said DOES apply for me. And, for me to double or triple my substantial amount of shares would require me selling and buying shares in huge amounts 20K or more at a time repeatedly over a period of many trading days, trying to sell at the peak and buy at the dip of 20% or more. You said "some weeks the share price varies by 20 to 30 percent". That would require selling at the exact peak, and buying at the exact dip. Anyway, good for you if it is in your 401K and you do not have to deal with the consequences of paying large capital gains taxes on shares sold and bought again at a lower price.
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