Bitwise's Bitcoin ETF (BITB) grew its holdings by another 184.49 BTC worth $14.39 million on Wednesday, September 9, as its multi-session run continues toward the largest flow prints in its stored history. The fund now holds 38,354.79 BTC valued at $2.99 billion. The move came as the tracked holdings of iShares' massive IBIT and ETHA funds remained at their first-snapshot values and Bitwise's Ethereum ETF (ETHW) posted no flow for a second consecutive session. For daily ETF data, see the Crypto ETF Flows hub and the programmatic ETF Flows API.
XOOMAR Pulse Intelligence
Spot BTC & ETH ETF Flows & Holdings
A $14 Million Wednesday for BITB
Wednesday's flow of $14.39 million marks the latest incremental step in BITB's recent accumulation. The fund added 184.49 BTC to reach its current peak in this stored window of 38,354.79 BTC on September 9. The flow is small compared to the largest positive recorded for BITB, which was $2.95 billion on August 21. That same August 21 print is also the largest-magnitude flow (positive or negative) in the entire stored session log.
The BITB Tape: A Story in Three Parts
The full chronological flow tape shows BITB's life, stored here from early 2024, falling into three distinct regimes. The first was an accumulation phase that led to the current peak holdings of 38,354.79 BTC on 2026-09-09. The second featured a sharp washout, where the largest-magnitude flow of $2.95 billion occurred. The third is a recovery phase that has brought the fund back to that peak AUM level.
| Date | Weekday | Holdings | Flow | AUM |
|---|---|---|---|---|
| 2026-08-21 | Friday | 37,752.58 BTC | $2.95 billion | $2.96 billion |
| 2026-08-24 | Monday | 37,871.97 BTC | $9.40 million | $2.98 billion |
| 2026-08-25 | Tuesday | 37,909.95 BTC | $2.99 million | $2.98 billion |
| 2026-08-26 | Wednesday | 37,947.94 BTC | $2.99 million | $2.99 billion |
| 2026-08-27 | Thursday | 38,023.91 BTC | $6.09 million | $3.05 billion |
| 2026-08-28 | Friday | 38,295.25 BTC | $21.04 million | $2.97 billion |
| 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 |
| 2026-09-09 | Wednesday | 38,354.79 BTC | $14.39 million | $2.99 billion |
That's the last two weeks. The story is one of volatile, large-scale prints giving way to smaller, steadier inflows that have rebuilt the fund's asset base.
ETHW's Quiet Streak and Recent Inflows
Bitwise's Ethereum ETF (ETHW) had no computed flow on Wednesday, marking its sixth consecutive stored session with a zero print. This quiet period follows two significant recent inflows. The last non-zero activity was an inflow of $3.58 million on Tuesday, September 1, preceded by another of $1.39 million on Friday, August 28. It's a reminder that ETF flow can be sporadic. The lack of a stored flow does not necessarily mean the fund didn't trade, only that the measured holdings change was zero.
Awaiting Activity From the Titans
The real scale in this data comes from the two iShares funds, IBIT and ETHA, for which we only have a first holdings snapshot dated 2026-08-17. They are behemoths. IBIT's 785,771.17 BTC is 20.5 times the size of BITB's current holdings. ETHA's 3,527,867.37 ETH is 31.5 times larger than ETHW's 112,053.33 ETH.
Because these are first snapshots, there is no prior row to compute a daily flow. Their blanks in the table below are not zero prints, they are unknowns.
| Ticker | Issuer | As-of date | Holdings | Computed flow | AUM |
|---|---|---|---|---|---|
| BITB | Bitwise | 2026-09-09 | 38,354.79 BTC | $14.39 million | $2.99 billion |
| ETHW | Bitwise | 2026-09-09 | 112,053.33 ETH | $0.00 | $274.97 million |
| IBIT | iShares (BlackRock) | 2026-09-08 | 785,771.17 BTC | $61.29 billion | |
| ETHA | iShares (BlackRock) | 2026-09-08 | 3,527,867.37 ETH | $8.66 billion |
Combined, the two Bitcoin funds (BITB + IBIT) hold 824,125.96 BTC. The two Ethereum funds (ETHW + ETHA) hold 3,639,920.70 ETH.
How the Tape Is Made
Computed flow is a derived metric. It's the change in a fund's holdings versus the previous stored row, multiplied by the XOOMAR mark price at the time of ingest. This yields a dollar-denominated estimate of net capital moving in or out. AUM is simply the holdings multiplied by that same mark. A blank flow field means it's the first snapshot for that fund in the stored window. It doesn't tell you if the fund traded that day. It tells you we can't compute a daily delta.
The Related Markets
The BTC and ETH marks used for these AUM and flow calculations are drawn from related perpetual futures markets. These are separate data series observed at the same time, not effects of the ETF prints. (Funding is the perpetual-futures rate, not ETF capital flows.)
| Asset | Exchange | Mark | Funding rate |
|---|---|---|---|
| BTC | Binance | $77,903.80 | 0.00004030 |
| ETH | Binance | $2,451.92 | -0.00001856 |
| BTC | Bybit | $77,930.40 | 0.00002787 |
| ETH | Bybit | $2,452.15 | -0.00003760 |
You can track these rates on the standalone Funding Rates Pulse.
What Comes Next
The immediate catalyst for more data is clear. A second holdings file from iShares for IBIT or ETHA would unlock the first daily flow reading for these market giants. Until then, they are immense static weights in the combined totals. For BITB, the question is whether its steady post-washout inflows can continue pushing its holdings, and its flows, closer to the largest prints in its tape. The fund's journey is a case study in the volatile, stepwise nature of ETF accumulation, where a $14 million day is a small step on the path back toward a $3 billion one.
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.
