According to @WatcherGuru, 12 trillion AUM manager BlackRock said Bitcoin is one of the biggest investments this year, highlighting elevated institutional attention on BTC in 2025 (source: @WatcherGuru on X, Dec 22, 2025). Traders can monitor BTC spot price, perpetual funding rates, and options implied volatility for immediate reaction to this headline to calibrate risk and positioning (source: @WatcherGuru on X, Dec 22, 2025).