Coinbase maintains 1,123,540.12 BTC, while Binance holds 679,690.64 BTC. Bitfinex and Upbit possess 356,938.05 BTC and 175,200.89 BTC, respectively, illustrating the dominance of these platforms in the Bitcoin ecosystem.

The collective value of the Bitcoin held by these exchanges is approximately 249.43 billion USD, reflecting significant control over the market by these leading players.