The Bitwise Bitcoin ETF (BITB) posted a computed flow of $0.00 on 2026-09-08, Tuesday. The fund's holdings remained flat at 38,170.30 BTC after a turbulent stretch that included a historic inflow. Data from issuer public filings and XOOMAR's marks shape this analysis of Bitcoin ETF flows.
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The Day's Print
Tuesday's snapshot from the fund showed no change in holdings, translating to $0.00 in computed flow. According to the stored data, its largest single-day inflow occurred a few weeks prior on 2026-08-21, a $2.95 billion move. That remains the largest-magnitude flow in the entire tape, positive or negative. Following that event, the fund's recovery has been marked by more modest prints, including two consecutive sessions of zero flow on 2026-09-07 and 2026-09-08. The cumulative sum of all stored flows for BITB is $15.05 billion.
BITB's Long Road
A look at the full history reveals a fund defined by three distinct regimes: accumulation, washout, and recovery. It spent months building a position, eventually peaking at 38,295.25 BTC on Tuesday, 2026-08-28. The massive $2.95 billion print represented the pivot point, the most volatile event in the stored window. Since then, the fund has stabilized, operating near the $3 billion AUM mark.
The tape below tells the entire story from launch to the present calm.
| Date | Holdings | Computed Flow | AUM |
|---|---|---|---|
| 2024-01-11 Thursday | 150.00 BTC | $7.80 million | $93.60 million |
| 2024-01-12 Friday | 151.00 BTC | $7.85 million | $94.22 million |
| 2024-01-15 Monday | 154.00 BTC | $8.00 million | $96.10 million |
| 2024-01-16 Tuesday | 155.00 BTC | $8.05 million | $96.72 million |
| 2024-01-17 Wednesday | 156.00 BTC | $8.10 million | $97.34 million |
| ... | ... | ... | ... |
| 2026-08-31 Monday | 37,654.91 BTC | -$50.41 million | $2.96 billion |
| 2026-09-01 Tuesday | 37,703.62 BTC | $3.76 million | $2.91 billion |
| 2026-09-02 Wednesday | 37,812.15 BTC | $8.36 million | $2.91 billion |
| 2026-09-03 Thursday | 37,866.41 BTC | $4.40 million | $3.07 billion |
| 2026-09-04 Friday | 38,170.30 BTC | $24.20 million | $3.04 billion |
| 2026-09-07 Monday | 38,170.30 BTC | $0.00 | $3.02 billion |
| 2026-09-08 Tuesday | 38,170.30 BTC | $0.00 | $3.00 billion |
Ether Fund's Quiet Run
Bitwise's Ethereum counterpart, ETHW, also booked a $0.00 on 2026-09-08. It's been in a quiet phase, recently logging one of its longest streaks of zero computed flow: five consecutive stored sessions from 2026-08-31 to 2026-09-04. That calm was broken by two significant inflows, a $3.58 million add on 2026-09-01 and a much larger $272.74 million inflow on 2026-08-21. The fund currently holds 112,053.33 ETH.
The Giants' First Snapshots
The flows for the giants, the iShares funds, are unknown. the dataset contains only the first stored holdings snapshots for IBIT and ETHA, both dated 2026-08-17. This is a first snapshot, so no prior row exists to compute a flow. The sheer scale of these funds is the story. BlackRock's IBIT holds 785,635.32 BTC, which is 20.6 times the size of BITB's current treasury. Its companion, ETHA, holds 3,527,867.37 ETH, making it 31.5 times larger than ETHW.
Combined Scale:
- Bitcoin: BITB and IBIT together hold 823,805.61 BTC.
- Ethereum: ETHW and ETHA together hold 3,639,920.70 ETH.
How the Tape Was Built
Computed flow is not a direct measure of creations or redemptions. It is the change in issuer-reported holdings from one stored date to the next, multiplied by the XOOMAR mark for that asset at ingest time. AUM is the holdings multiplied by the same mark. This methodology means a zero print is a genuine, stored zero change in holdings. No forecast data is stored, so directional beats or misses cannot be assessed. The date on each row is the issuer's as-of date.
Ethereum and Bitcoin Prices
The related marks tape provides price context at the time of dataset generation. It is a separate dataset, and caution is required: no causation between ETF flows and perpetual futures prices can be inferred from this joint presentation.
| Asset | Exchange | Mark | Funding Rate |
|---|---|---|---|
| BTC | bybit | $78,453.09 | 0.00004427 |
| ETH | binance | $2,482.89 | 0.00004449 |
| BTC | binance | $78,453.70 | 0.00002726 |
| ETH | bybit | $2,482.78 | 0.00002416 |
What Next
The immediate catalyst for significant new data will likely be the next holdings file from iShares for IBIT or ETHA. A second snapshot would unlock daily computed flow for the largest Bitcoin and Ethereum ETFs, shifting the market's focus. Until then, the focus of Bitcoin ETF flows will remain on smaller funds like BITB, where calm days like Tuesday follow historic storms.
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.
