According to Ki Young Ju, Bitcoin ETFs have expanded in size, but their capital composition shows the qualitative leap is still ahead, indicating the current investor base has not yet tapped the largest institutional liquidity pools (source: Ki Young Ju on X, Nov 21, 2025). He states that much larger liquidity pools are waiting for Bitcoin, highlighting a next phase where broader institutional access could become a key driver of ETF market liquidity (source: Ki Young Ju on X, Nov 21, 2025). For trading, this prioritizes monitoring spot BTC ETF net inflows, primary market creations and redemptions, and distribution into larger investor channels as signals of incoming liquidity (source: Ki Young Ju on X, Nov 21, 2025).