The Bitwise Bitcoin ETF (BITB) added 37.99 BTC on Wednesday, August 26. This translated to a computed flow of 2.99 million dollars at the contemporaneous mark. The fund's holdings reached a new high within this stored window, 37,947.94 BTC. According to the data, this latest inflow is solid but far from the largest in Bitwise's lengthy tape. That title belongs to a 2.95 billion dollar flow recorded five days earlier, on August 21, which is also the largest magnitude flow in the entire series.
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Spot BTC & ETH ETF Flows & Holdings
BITB's Milestone Flow Unpacked
The Wednesday increment of 37.99 BTC for BITB was the third consecutive daily inflow. Based on the stored data, this latest flow is routine. It stands a world apart from the monumental 2.95 billion dollar print that hit the tape on August 21. That single day's activity helped drive BITB to its current holdings peak, which was reached on Wednesday. So while the fund stabilized at a 2.99 billion dollar AUM level, this session's 2.99 million dollar inflow is a glancing blow compared to the epic 2.95 billion dollar battle that defined the week.
Three Regimes in the BITB Tape
BITB's journey within this data window splits neatly into three acts: accumulation, a violent washout, and a recovery. The fund entered the period accumulating into its peak holdings of 37,947.94 BTC, reached on Wednesday. The bulk of that ascent wasn't a gradual build. It was a single, brutal influx on August 21, marked by that 2.95 billion dollar flow. The washout phase is essentially this very event, a massive, singular distribution exertion. Following that shock, the tape shows a recovery through the rest of the week, culminating in Wednesday's stable footing. The story is told by the numbers.
| Date | 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 |
Latest BITB sessions. A zero flow is a stored zero, not a missing row.
ETHW's Long Pause and Recent Action
Bitwise's ether fund, ETHW, presented a narrative of absence followed by sharp returns. The tape records a streak of one stored session with a zero dollar flow, a quiet spell. That stillness was shattered on August 21, when a 272.74 million dollar inflow rocketed holdings from 1,055.00 ETH to 108,707.95 ETH. Two more positive prints followed, adding 2.30 million dollars and 873,976.13 dollars on August 24 and August 25, respectively. The Wednesday session settled, showing no change from the prior day's holdings of 109,995.14 ETH.
First Glimpse at BlackRock's Domination
The latest holdings file provides the very first snapshot for BlackRock's iShares ETFs, IBIT (Bitcoin) and ETHA (Ethereum), dated August 25. As initial snapshots, there's no prior row to compute a flow amount. A blank field means an apples to oranges comparison isn't possible yet. And the scale is staggering right out of the gate. IBIT held 771,640.98 BTC, a pile 20.3 times larger than BITB's current trove. ETHA reported 3,341,346.55 ETH, towering over ETHW's stash by a factor of 30.4.
Combined, the two Bitcoin funds tracked here hold 809,588.92 BTC. The two ether funds total 3,451,341.69 ETH. This BlackRock to Bitwise matchup shows a dominant architecture, and that's just from a first look.
How the Tape Counts Flow
It's important to know what this "flow" number means. It's a computed metric, not a direct issuer report. The system works by taking the change in holdings for a specific ticker versus its previous stored row and multiplying by the XOOMAR perpetual mark captured at data ingest, which applies a consistent price. A blank flow cell results from a first snapshot, because there's no prior row for comparison. This methodology isolates the effect of pure coin movement. The tape doesn't call this funding, a term only used for the perpetual futures rate seen in a different dataset.
Related Markets at the Same Moment
This ETF data lives alongside the perpetual markets. A caution is paramount. Do not claim ETF flows caused funding. These are two Pulse tapes timestamped together. The BTC and ETH marks from major exchanges at the same moment provided the valuation anchors for the AUM and flow calculations.
Awaiting the Next Snapshots
The unknowns are clear cut. The dataset can't show daily flow for IBIT and ETHA until a second holdings file arrives. It's also blind to holdings for any ETF tickers not listed, like FBTC or GBTC. The BITB increase represents a delta in holdings multiplied by a price, the tape doesn't show whether it was creations, a redemptions mix, or a pricing artifact. The next set of iShares data will unlock the first measurable flows for those juggernauts. That's what will shift the story from sheer scale to real velocity.
Primary Sources & Disclosures
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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.
