Bitwise's BITB took on 271.33 more Bitcoin, worth a computed flow of $21.04 million, on Friday, August 28. This was its second-largest positive daily flow in the tape, after an enormous print three sessions earlier. The move came as the firm's Ethereum ETF, ETHW, posted a positive flow after two stored sessions of exactly zero. Meanwhile, the first stored snapshots for mammoth iShares rivals IBIT and ETHA entered the ledgers. This data is drawn from issuer files tracked by XOOMAR's Crypto ETF Flows and the iShares Bitcoin Trust holdings.
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The Day's Flow
On Friday, BITB’s holdings rose from 38,023.91 BTC to 38,295.25 BTC. That’s a coin delta of 271.33 BTC, which XOOMAR valued at a computed dollar flow of $21.04 million. This $21.04 million print ranks as the fund’s second-highest positive daily flow in the stored window, trailing only the colossal addition logged three sessions earlier, on Friday, August 21. When measured by absolute magnitude, that prior flow is also the largest in the tape. BITB’s AUM at this snapshot stood at $2.97 billion.
BITB's Shifting Tides
The fund’s stored window tells a story of three phases. It began with a steady accumulation, rising from a low base to reach peak holdings of 38,295.25 BTC. This climb was basically a long build-up. That slow ascension was shockingly punctuated on August 21 by the single-session washout of $2.95 billion. That outflow was an immense event, representing the largest-magnitude daily move across all stored data. It's the kind of move that defines a regime. The data then shows a subsequent recovery period leading to the current window's end, culminating in this latest $21.04 million addition on August 28. Across the full stored session count, BITB’s net flow sum totals a positive $15.06 billion. The table below contains every stored session’s detail.
| Date | Holdings | Computed Flow | AUM |
|---|---|---|---|
| 2024-01-11 | 150.00 BTC | $7.80 million | $93.60 million |
| 2024-01-12 | 151.00 BTC | $7.85 million | $94.22 million |
| ... | ... | ... | ... |
| 2026-08-27 | 38,023.91 BTC | $6.09 million | $3.05 billion |
| 2026-08-28 | 38,295.25 BTC | $21.04 million | $2.97 billion |
| Note: This is an abbreviated view of the full BITB tape. Zero flow is a stored $0.00, not a missing row. |
ETHW's Dormant Stretch Awakens
Bitwise’s Ethereum ETF, ETHW, showed renewed activity last Friday, August 28. After going flat for two consecutive stored sessions, August 26 and August 27, with computed flows of exactly $0.00, the fund posted a positive inflow of $1.39 million. This brought its holdings to 110,567.22 ETH, valued at an AUM of $269.03 million. Prior to that two-session zero stretch, ETHW had logged a positive flow of $873,976.13 on August 25, followed by the two quiet days. There is a clear break in the pattern.
New iShares Giants Enter the Tape
The dataset now marks the first stored holdings snapshots for the iShares ETFs, IBIT and ETHA. Dated August 27, these initial readings show colossal scale but have no prior rows for flow calculation. Combined with the BITB and ETHW snapshots, these four funds show a picture of their relative scale.
- IBIT vs. BITB: With 777,665.49 BTC, IBIT's holdings are 20.3 times larger than BITB's 38,295.25 BTC.
- ETHA vs. ETHW: With 3,440,015.82 ETH, ETHA's holdings are 31.1 times larger than ETHW's 110,567.22 ETH.
- Combined Bitcoin: The two Bitcoin funds' holdings total 815,960.73 BTC.
- Combined Ether: The two Ethereum funds' holdings total 3,550,583.04 ETH.
How These Computed Flows Are Made
Holdings come from issuer public files. The date on each row is the issuer's as-of date. Computed flow is the change in holdings versus the previous stored row for that ticker, multiplied by the XOOMAR mark at the time of data ingest. AUM is holdings times that same mark. A first snapshot has no prior row for comparison, so its flow is absent. It's not a zero.
Funding and ETF Marks at This Hour
At the time of this data ingest, the Bitcoin and Ethereum ETF marks that determine AUM were in line with related perpetual futures markets tracked in XOOMAR’s Funding Rates. This data is timestamped together but the ETF flows do not cause these marks or funding rates.
| Asset | Exchange | Mark | Funding Rate |
|---|---|---|---|
| BTC | bybit | $78,170.20 | 0.00006511 |
| BTC | binance | $78,169.40 | 0.00009929 |
| ETH | bybit | $2,452.42 | 0.00002244 |
| ETH | binance | $2,452.21 | 0.00000888 |
What a Second File Would Reveal
The iShares entrants, IBIT and ETHA, are currently anchored by single snapshots. The next stored file from those issuers would unlock the first true daily flow readings for these giants, clarifying whether their initial massive scale is static or actively growing within this window. This would also sharpen the combined Bitcoin ETF flows picture, which currently shows BITB's activity in near isolation.
These computed flows are a product of issuer filings and XOOMAR's mark. For programmatic access to this data, you can explore the ETF Flows API.
Primary Sources & Disclosures
Disclaimer: Content on XOOMAR is produced using AI-assisted research, drafting, and verification workflows and is intended for informational and educational purposes only. It does not constitute financial, investment, legal, tax, medical, or professional advice of any kind. All analysis reflects available information at the time of publication and may not be current. Verify information independently and consult qualified professionals before making decisions. Editorial policy
Written by
XOOMAR Insights Team
Research and Editorial Desk
The XOOMAR Insights Team pairs automated research with human editorial judgment. We track hundreds of sources across technology, fintech, trading, SaaS, and cybersecurity, cross-check the facts, and explain what happened, why it matters, and what to watch next. We do not just rewrite headlines. Every article is fact-checked and scored for reliability before it goes live, and we link back to the original sources so you can verify anything yourself.
