This has been discussed so many times, comparing Bitcoin to the stock market or gold.
We always comparing them to if there is a relationship between these valuable assets, but it has a long debuted from members the comparison or the relationship they had. But for me, they don't have a direct correlation because they had different cons and pros.
I saw a thread last week created by @Hydrogen, here you may take a look the price chart.
And the existent topics.