The people shaping Bitcoin’s September 2026 ETF fee war

IBIT reaches monthly inflow milestone

IBIT reached a $15 billion monthly inflow milestone. The fund hit $50 billion in assets, a pace five times faster than the next quickest ETF in the industry. IBIT brought in $604 million in inflows on a recent Thursday, following a single-day record of $612 million. More than three-quarters of IBIT’s assets under management come from flows, while the remaining portion comes from price gains. BlackRock lowered the IBIT expense ratio to 0.15% to defend its market position. This reduction comes as Morgan Stanley prepares to launch MSBT, a product expected to have a 0.14% annual expense ratio. IBIT hit $10 billion in assets only seven weeks after its January 11 launch. This speed surpassed the record set by SPDR Gold Shares, which took more than two years to reach $10 billion in assets. IBIT is one of only 152 ETFs out of 3,400 to reach that $10 billion mark. The fund now holds more assets than BlackRock’s gold ETF.

Institutional access and conversion minimums

BlackRock reduced the in-kind conversion minimum for IBIT from $25 million to $1 million. BlackRock reduced the in-kind conversion minimum for IBIT from $25 million to $1 million, a move that expands access for qualifying institutional participants who use the mechanism to create or redeem ETF shares using the underlying asset. This change was disclosed in an updated IBIT filing and relates to creation and redemption activity rather than retail holders. This mechanism allows authorized participants to move Bitcoin in and out of the trust structure through institutional plumbing. Such processes help keep the ETF price aligned with net asset value and improve liquidity management. You should note that this change does not grant retail users the ability to redeem shares for physical Bitcoin in their personal wallets. The lower threshold improves flexibility for mid-sized firms and supports better arbitrage.

Fund Name Expense Ratio Minimum In-kind Conversion
IBIT 0.15% $1,000,000
MSBT 0.14% Not specified
GBTC ~0.25% Not specified

Will this $1 million threshold attract more mid-sized institutional players?

Leadership and the scale of iShares

Mark Wiedman, global head of iShares, and Martin Small, head of US iShares, manage the $1.4 trillion ETF unit. BlackRock CEO Larry Fink previously linked Bitcoin to money laundering, but the firm now operates the world’s largest Bitcoin fund. BlackRock uses its scale to compete against Vanguard and manage fee pressures. The firm generates additional revenue by keeping 15% to 30% of securities lending revenue through its affiliate, BlackRock Institutional Trust Company. This revenue source provides a competitive advantage that Vanguard lacks because Vanguard passes net proceeds to investors. Vanguard maintains that fund shareholders should bear all lending risks and keep after-cost returns.

IBIT options also maintain high activity, averaging about $1.7 billion in daily notional volume. BlackRock’s iShares branded ETFs hold $2.7 trillion in assets, and the iShares Core lineup contains $300 billion in US assets. Morgan Stanley intends to launch its MSBT fund with 50,000 shares worth approximately $1 million. JPMorgan Chase has also filed for Bitcoin-linked structured notes tied to IBIT. While competitors like Bitwise saw assets fall from $15 billion in February to $9 billion by August, BlackRock continues to grow. Bitwise announced layoffs last week, reducing its workforce from 180 in February to 155.

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