BlackRock's two spot funds shrank for a second straight day. iShares' IBIT gave up 1,902.22 BTC on Wednesday, September 16, about $145.02 million, and ETHA gave up 45,858.81 ETH, about $111.80 million. That's $256.82 million out of the pair in one day, right after $258.69 million on Tuesday.
From the data
Spot BTC & ETH ETF Flows & Holdings
ARK 21Shares' ARKB lost 228 BTC, about $17.31 million. Bitwise's BITB and ETHW didn't move.
Each issuer publishes its fund's holdings every business day. A fund's flow is the day's change in those holdings, in dollars: falling holdings mean the fund redeemed shares, rising holdings mean it created them.
| Fund | Issuer | Change on September 16 | Flow | Holdings |
|---|---|---|---|---|
| IBIT | iShares | -1,902.22 BTC | -$145.02 million | 782,623.42 BTC |
| ETHA | iShares | -45,858.81 ETH | -$111.80 million | 3,527,868.68 ETH |
| ARKB | ARK 21Shares | -228 BTC | -$17.31 million | 31,867 BTC |
| BITB | Bitwise | 0 BTC | $0 | 38,029.22 BTC |
| ETHW | Bitwise | 0 ETH | $0 | 109,193.35 ETH |
All told, about $274 million left the five funds on Wednesday: $162 million from the bitcoin funds and $112 million from the ether funds.
ETHA's two-day drain
ETHA's 45,858.81 ETH is the largest one-day drop in its holdings on any day since August 20, and it landed on top of Tuesday's 40,729.84 ETH. Two days took out 86,588.65 ETH, about $209.29 million. The fund still holds 3,527,868.68 ETH, 32.31 times what ETHW holds.
IBIT's two-day slide
IBIT's outflow was smaller than Tuesday's 2,128.69 BTC and well short of the 2,604.48 BTC it lost on September 1. Still, two days cost it 4,030.91 BTC, about $306.22 million. At 782,623.42 BTC, it holds 20.58 times BITB's bitcoin.
Bitwise stands still
BITB ended the day at 38,029.22 BTC and ETHW at 109,193.35 ETH, both unchanged from Tuesday. That was the day BITB redeemed 162.78 BTC, about $12.36 million, and ETHW 14,300.49 ETH, about $34.39 million. The three bitcoin funds hold about 852,520 BTC between them, and the two ether funds about 3,637,062 ETH.
Each fund's daily figures are on the crypto ETF flows page and in the ETF flows API.
Primary Sources & Disclosures
This article was written with AI tools. It's information, not investment, legal or tax advice. Editorial policy
Written by
XOOMAR
Data desk
XOOMAR publishes free market data from primary sources, with an open API. When something we publish is wrong, it's corrected in place.










