Increasing institutional interest and investment in spot Bitcoin ETFs
As of mid-August 2025:
BlackRock's IBIT spot Bitcoin ETF holds over 700,000 BTC, representing approximately 4% of the total Bitcoin supply.
The Blackrock spot Bitcoin fund manages over $91 billion in assets.
Fidelity's FBTC spot Bitcoin ETF holds over 200,000 BTC, representing approximately 2% of the total Bitcoin supply.
The Fidelity spot Bitcoin ETF manages over $24 billion in Bitcoin assets.
In summary, BlackRock's IBIT and Fidelity's FBTC together hold a significant portion of the total Bitcoin supply, highlighting the increasing institutional interest and investment in spot Bitcoin through ETFs.
There is something you need understand about these numbers. This ETF spots are not owned by Blackrock and fidelity but it's managed by them. The ETFs goes to the investors but most likely you know traditional investors like to be hidden because of their interests and values.
These numbers of Bitcoin they are holding, there is possibility of Blackrock and Fidelity owning somw percentage of Bitcoin spot ETF. Let's say the total % for public is 4%, this number doesn't come close to the amount of Bitcoin the centralized exchanges are holding. The centralized exchanges alone hold roughly 15% of Bitcoin supply which are held on their custody just like ETFs bodies.
The key thing here is, Blackrock and Fidelity manages other assets, combined investment worth $100b. This is an opportunity to tap liquidity from such places. People can sell their assets and want more Bitcoin, that's more like exposure of Bitcoin to traditional investors, more exposure more adoption of Bitcoin but the Bitcoin they hold doesn't comes close to what other centralized exchanges hold but the centralized exchanges doesn't manage other assets like the way Blackrock and Fidelity does, this is the big part they play in Bitcoin.
More adoption YES, decentralization NO doesn't sound like a win for Bitcoin. The assets managed is still as unsafe as assets in CEXs. If their wallets gets compromised, their clients loses their Bitcoin as well.
Bitcoin was designed to be decentralized, all institutions involvement gets Bitcoin more centralized than decentralized and it's a loss for Bitcoin irrespective of the fact that the price is going up.
Not your keys, not your coins. The best way to hold Bitcoin is self custody and not third party management.