I think you have to change your mindset then because Bitcoin is not like stock market.
Bitcoin is not stock. If you want to have and own bitcoin, buy bitcoin. Don't buy stocks, shares of any company with products related to Bitcoin. What you have from them is a paper, a credit number in your account, and it's not bitcoin. Whether you can claim it to bitcoin later or not, it's big uncertain future.
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If you have that kind of thought then you can't buy Bitcoin. You will really need to have some technical basics, like wallet to hold your Bitcoin, that you have total control. For when to buy, it should be in crypto base exchanges.