Spot cryptocurrency exchange-traded funds recorded massive capital inflows on August 20, absorbing over $800 million collectively. Spot Bitcoin ETFs led the surge by attracting $606 million in a single day, while spot Ether ETF products secured $221 million. These figures represent a notable acceleration compared to the previous trading session, validating strong ongoing institutional demand for digital assets. The sustained inflows indicate that traditional financial institutions are increasingly allocating capital into major digital assets via regulated vehicles. This strong institutional buying power provides substantial liquidity to the crypto spot markets, helping to absorb overhead selling pressure and reinforcing Bitcoin's recent price appreciation. The steady momentum in Ether funds also highlights expanding investor appetite beyond the market leader. Traders and market analysts should watch whether this multi-day inflow trend can sustain its pace over the coming sessions. Continued strong allocations into these funds typically act as a bullish catalyst for broader crypto market valuations, whereas any sudden slowing or reversal in ETF flows could lead to short-term profit-taking across major crypto pairs.