Dont have more then 10% in one stock long term seems best. Thats done on current value because presumably you have a mortgage to pay off long term or other places to put the capital. An aggressive trailing stop loss is ideal to sell as its rising, be aware of earnings and other events out of hours. Or another thing would be to sell the plain stock and take a managed investment fund that holds this stock and watch it like a hawk for you I guess, like
Scottish Mortgage have TSLA I think.
Others will say withdraw original capital and gamble the profits, I think thats a bit too aggressive because nobody trades a profit on every trade