Grayscale's 1.5% fee pays it what BlackRock's 0.25% pays on six times the assets

Grayscale collects about the same money on a tenth of the assets. GBTC's roughly $10bn at 1.5% comes to about $150m a year, and IBIT's $60bn-plus at 0.25% comes to about $150m too ^[5][6][7][4]. Repricing the flagship to BlackRock's rate would leave Grayscale about $25m on today's assets, some $125m less ^[5]. Twenty days of redemptions cost it about $3.8m of annual fee revenue ^[6].

Holding the fee is the cheaper option, and stays cheaper for years. If the pace holds, 1.5% on a shrinking base still out-earns 0.25% on today's $10bn until GBTC falls below about $1.67bn, an 83% decline from here ^[7]. Annualise the 20-day outflow across 252 trading days and the fund is shedding about $3.2bn a year; at that rate the crossover arrives in roughly two and a half years ^[8]. The calculation assumes redemptions neither accelerate nor stop, and that a cheaper GBTC would pull in nothing new. Crypto Briefing, which reported the flows from Arkham Intelligence data, does not say who is selling ^[1].

The inflow side is lumpier than a 20-day total suggests. September 3 brought $454m and August 27 brought $277.6m ^[3][4], which between them is about 68% of the whole window ^[9]. The other eighteen sessions averaged about $19m ^[10].

On the split itself, GBTC's outflow is about 8% of the $3bn-plus the spot category took in during the surge ^[10][3]. The same report credits BlackRock's distribution, saying its network reaches financial advisors, wealth managers and institutional allocators that smaller competitors cannot ^[14]. A 125-basis-point fee gap and better shelf space would produce the same flow data. Crypto Briefing also notes that a dollar leaving GBTC for IBIT is roughly net-neutral for Bitcoin's price ^[16], so what the rotation moves is which manager earns the fee on it.

The figures are internally consistent: $60bn across 785,000 BTC implies about $76,400 a coin, and $10bn across 130,000 implies about $76,900, both inside the $60,000 to $80,000 range the report gives for the period ^[11][11].

Two outcomes would sink the fee reading. GBTC redemptions stalling with the fee still at 1.5% would say price sensitivity was not what moved the money, and Grayscale cutting to 0.25% and bleeding anyway would say the same. The publisher's own view is that the outflows continue unless the fee comes down substantially ^[15]. IBIT now holds about 61% of the BTC sitting in US spot Bitcoin ETFs, against GBTC's 10% ^[12].