In whatever investment that one do, we would always like to know if the big sharks are invested in the particular investments which you are in. How do you find out? In Traditional Finance, we can know from SEC filings, announcement from companies investor relations etc after the trades are done. If you want more real time trade, you can use Bloomberg but that would usually set you back about 5 digits cost monthly, which is impossible for most retail traders.
However, Crypto is very very different. We can see real time trade using simple tools.
Yes! Blockchain scanner Etherscan, Arbiscan etc.
How much does it cost? Free!!! All transaction are transparent to all users of Crypto...