Who owns the most Ethereum?

I'm quite interested in the ownership of Ethereum. Could you tell me who currently holds the largest stake in Ethereum? Is it an individual, a group, or perhaps a large institution? I'm also curious about their motivations for owning such a significant amount of Ethereum. Could it be for long-term investment, strategic planning, or perhaps for influencing the development of the Ethereum ecosystem? I'd appreciate it if you could provide some insights into this matter.