Tim Cook just expressing interest doesn't mean he just entered. I believe that there are still many of the world's top billionaires investing without creating a sensation. And from his statement, the bitcoins he owns are not related at all to the APPLE company.
..however, that his interest was from a “personal point of view” rather than a corporate one.
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The most popular one is Elon Musk, he even has a big role in the development of crypto industry right now.
The difference is that Musk invests in bitcoin on Tesla's behalf, so ownership goes on the company's balance sheet. Maybe the amount of bitcoin Tim Cook invested isn't as surprising as the news.
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He may not create a project.
I don't know if this involves the APPLE company, their co-founder Steve Wozniak also founded a crypto project called
WOZX.