Bitcoin tends to sell off on news of ETF approvals, and the recent drop was expected.
The key resistance level of $48,000 to $50,000 played a role in the drop.
Outflows from grayscale funds and profit-taking by smart money investors contributed to the drop.
If the stock market continues to rally, Bitcoin may catch up and recover.
A 50% drop in the stock market could lead to Bitcoin retesting the $15,000 level.