Bitwise’s BITB added 0.00 BTC on Tuesday, September 15. Its AUM stands at $2.94 billion.
XOOMAR Pulse Intelligence
Spot BTC & ETH ETF Flows & Holdings
That reading aligns with daily snapshot data from Bitwise, compiled by XOOMAR. The figure represents a true zero-day print, an absence of net flow between stored issuer snapshots, distinct from a missing data point. In the stored tape, prints of this magnitude are rare, but they're not the extremes. That title belongs to BITB’s biggest influx, $237.90 million, and its largest-magnitude outflow, -$280.70 million.
Largest Prints for BITB
The most substantial stored inflow to BITB was its inaugural session on Thursday, January 11, 2024, at $237.90 million. The largest magnitude flow, by absolute value, was an outflow of -$280.70 million, which was stored on Monday, November 25, 2024.
BITB's Tape
XOOMAR reading of the BITB tape outlines distinct phases for the fund within this stored window. From its 2024 debut, BITB entered an accumulation phase characterized by persistent inflows. This buildup culminated in a peak of 38,354.79 BTC held on Wednesday, September 9, 2026.
The tape later recorded a dramatic washout, marked by the largest-magnitude outflow of -$280.70 million. Following this, the fund entered a recovery period. The period concluded with a zero-day print on September 15.
| Date | Holdings | Flow | AUM |
|---|---|---|---|
| 2024-01-11 | not available | $237.90 million | not available |
| 2024-11-25 | not available | -$280.70 million | not available |
| 2026-09-09 | 38,354.79 BTC | $0.00 | $2.99 billion |
| 2026-09-10 | 38,192.00 BTC | -$12.60 million | $2.96 billion |
| BITB holdings and flow, selected stored sessions. Zero flow is a stored zero, not a missing row. |
A Record of Stored Zeroes at ETHW
Bitwise's Ethereum ETF, ETHW, began its stored journey earlier this month. Its holdings were published by the issuer only on Tuesday, September 14.
The fund's initial sessions show a notable period of inactivity. ETHW posted a streak of $0.00 flow across 15 stored sessions. That streak finally broke with inflows of $29.10 million and $28.76 million in its last two non-zero sessions, bumping its AUM to $305.96 million.
Scaling Pillars from BlackRock
The largest snapshot on tape belongs to iShares Bitcoin Trust (IBIT), dated September 14 with holdings of 786,654.34 BTC. This scale dwarfs BITB's current stack. IBIT's holding makes it 20.6 times larger than BITB's 38,192.00 BTC. The combined Bitcoin held by these two funds, the only tracked U.S. Bitcoin ETFs with published holdings in this dataset, totals 824,846.34 BTC. A daily flow for IBIT is unknown, as its stored row remains a first snapshot.
Daily ETF Flows at Time of Print
The broader ETF landscape at the time of the BITB print shows a mix of activity and quiet zones.
| Ticker | Issuer | As-of date | Holdings | Computed flow | AUM |
|---|---|---|---|---|---|
| BITB | Bitwise | 2026-09-15 | 38,192.00 BTC | $0.00 | $2.94 billion |
| ETHW | Bitwise | 2026-09-15 | 123,493.83 ETH | $0.00 | $305.96 million |
| IBIT | iShares (BlackRock) | 2026-09-14 | 786,654.34 BTC | $134.30 million | $60.49 billion |
| ETHA | iShares (BlackRock) | 2026-09-14 | not available | $80.50 million | not available |
| Four tickers only. A blank flow is a first snapshot, not a zero print. |
Rates and Values on Ether and Bitcoin
At the time of these prints, perpetual-futures markets quoted separate price marks. The Bitcoin mark hovered around $76,900, while Ether traded near $2,477. These marks are used to value ETF holdings and compute AUMs. No causal link between ETF flows and these marks is presented in this data. They are two separate Pulse tapes captured at the same time.
Here's a snapshot of concurrent marks across leading venues, showing the funding rate context for Bitcoin and Ether.
| Asset | Exchange | Mark | Funding rate |
|---|---|---|---|
| BTC | hyperliquid | $76,905.00 | 0.00001250 |
| BTC | binance | $76,903.20 | 0.00009279 |
| BTC | okx | $76,897.80 | 0.00008115 |
| BTC | bybit | $76,895.50 | -0.00001729 |
| BTC | kraken | $76,911.27 | 0.00000773 |
| ETH | hyperliquid | $2,477.30 | 0.00000547 |
| ETH | bybit | $2,477.40 | -0.00004490 |
| ETH | okx | $2,477.19 | 0.00001044 |
| ETH | binance | $2,477.19 | -0.00006432 |
| Same-time perpetual marks. Not caused by the ETF print. |
Traced Moves at Bitwise and iShares
Snapshots reveal many neutral days. A sum of BITB's stored flows, excluding the first row, totals $2.56 billion over the life of the tape. Its net holdings change from its first stored row to its latest is an increase of 439.42 BTC. The trace only captures the delta in holdings multiplied by the XOOMAR mark at ingest. It doesn't distinguish between creations, redemptions mix, or pricing artifacts.
How does the data get made? Holdings come from public issuer files. For BITB and ETHW, Bitwise posts baskets on its fund page. For IBIT and ETHA, iShares provides a CSV. Flow is computed as the change in holdings versus the prior stored row for that ticker, valued at the mark ingested at that time. AUM is holdings times that same mark. For any fund's first stored snapshot, there is no prior row, so a flow figure is absent.
The ETF landscape captured here includes just four tickers. No forecast metrics are stored. The known gaps are daily flow for IBIT and ETHA due to their first-snapshot status, the exact mix behind BITB's add, and holdings for any ETF ticker not listed.
Closing Tabs
While iShares' IBIT shows massive scale, its Ethereum counterpart, ETHA, hasn't had a holdings snapshot published that allows a direct comparison with BITB's ETHW. A combined Ether total for ETHW and ETHA is unavailable.
What happens next hinges on filings. A second IBIT or ETHA holdings file would unlock a daily flow figure, filling a key data slot. Until then, the scale of BlackRock's Bitcoin dominance, at 20.6 times Bitwise's stack, stands as the starkest stored fact.
The BITB tape, stretching from January 2024 to September 2026, captures a net coin increase of 439.42 BTC through countless inflows and outflows. Its journey from launch day to a quiet Tuesday zero print reflects the fund's path within the wider, still-emerging ETF record.
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
Data desk
XOOMAR is a capital markets software and data company in Selden, New York. Every brief on this site starts from a dataset the company collects itself from primary sources (CFTC, SEC EDGAR, FINRA, the Federal Reserve, exchange APIs) and names the numbers it is built on, with a link to the data page so you can check them. Briefs are reviewed before they go out and corrected in place when the data is revised.
