Bitcoin ETF Comparison 🕵️

🔹IBIT: Holds the majority (~60%+) of BTC in all spot Bitcoin ETFs. This makes it the largest single fund holder.
🔹FBTC: Strong but behind IBIT.
🔹GBTC: Historically held the largest holding but its share is shrinking due to continuous outflows. Cost and Efficiency:
🔹IBIT (BlackRock):
Received its most aggressive inflows in late 2025 and 2026. Therefore, its average cost is around ~$80,400 (80k+ in some analyses). It shows a slight unrealized loss as it is slightly above the current price. However, thanks to its high inflow rate, it is rapidly growing its portfolio and provides an advantage in the long term. 🔹FBTC (Fidelity):
Has a more balanced purchase distribution compared to IBIT. Its average cost is generally lower than IBIT → better positioned at the current price.
🔹GBTC (Grayscale):
Has the lowest average cost basis as it is the oldest fund. The fund with the highest unrealized profit due to early (low-priced) purchases. However, it is disadvantageous for investors due to high fees (1.50%) and outflows.
IBIT and FBTC are advantageous for long-term investors with their low fees (0.25%).
GBTC's high fee of 1.50% is one of the main reasons for outflows. Investors are shifting to new, low-cost funds (IBIT/FBTC).
🔹Flow Dynamics (2026):
🔹IBIT: Strongest performance in 2026. Inflated total AUM with record inflows in April and supported the BTC rally.
🔹FBTC: Stable but unable to attract inflows as aggressively as IBIT.
🔹GBTC: Experiences chronic outflows due to the "old fund" effect. Many investors are exiting GBTC and switching to IBIT/FBTC.
🔹Performance and Tracking Quality:
All three track spot BTC. IBIT and FBTC have very low tracking errors (differences).
IBIT is ahead in terms of liquidity and narrow spreads; it is the most suitable tool for large institutions.
✨General Assessment and Recommendations
🔹IBIT: The best overall choice for institutional and retail investors. Dominance continues with high AUM, liquidity, low fees, and a strong inflow trend. Ideal for long-term HODL.
🔹FBTC: A good alternative for those using the Fidelity platform or seeking diversification. Its performance is close to IBIT.
🔹GBTC: The least preferred due to high fees and outflows. It can only be considered for those with a specific strategy (e.g., tax advantages).
🔹Conclusion: IBIT maintains its clear leadership in 2026. Attracting 60-70% of institutional capital flows alone demonstrates BlackRock's distribution power. In a low spot volume environment, ETFs (especially IBIT) have become the main engine of BTC demand.
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