No, they are not because bitcoin is a currency while stock refers to shares in the company. You can buy 0.1 or 0.7 btc or any amount while you cannot buy just any amount in stocks because you need to buy whole shares and besides there is already a rule in the stock market of the minimum shares one can buy. In the process maybe somehow they are the same since you will have bid and ask price if those prices will be hit then you can also have profit or lose depending of when you buy or sell the btc or stock.