BlackRock’s head of digital assets, Robbie Mitchnick, told Bloomberg in reporting published on 25 August 2026 that the iShares Bitcoin Trust has now processed more than $5 billion of direct bitcoin-to-ETF in-kind conversions — holders handing over coins and receiving fund shares, rather than selling coins and buying shares with the proceeds.

The number is real and it is large. It is also, in the sense almost every reader will take it, not money coming into bitcoin. Not one dollar of that $5 billion is an inflow. That distinction is the whole story, and it is going to be lost in the retelling this week, so it is worth setting out carefully.

What an in-kind conversion actually does

When an authorised participant creates ETF shares in cash, it hands the trust dollars, the trust buys bitcoin, and the coin count rises because someone bought coins. That is an inflow. It shows up in the daily flow tables, it is net new demand, and it moves price.

When an authorised participant creates shares in kind, it hands the trust bitcoin it already owns and receives shares. The trust’s coin count rises. Total bitcoin ownership does not change by a single satoshi. Nobody bought anything. What changed is the wrapper: coins that sat in self-custody or on a balance sheet now sit inside a regulated fund, and the holder’s position is now an equity line rather than an on-chain balance.

So a headline of the form “$5 billion of bitcoin has moved into BlackRock’s ETF” is true, and a reader who converts it into “$5 billion of buying pressure” has misread it by the entire amount. If you want the mechanics in full, our guide to ETF creation and redemption walks through both routes.

The trajectory is the genuinely notable part. Mitchnick’s figure was around $3 billion in October; it has therefore roughly doubled in ten months. His stated expectation, quoted by Bloomberg: “It’s going to keep growing because we keep expanding the access.”

Three separate dates, routinely collapsed into one

Those are four different events and most coverage this week has run them together into a single 25 August announcement. There was no announcement. The threshold change took effect in July and became public only because a BlackRock executive said it out loud on television three weeks later — no 8-K, no prospectus supplement flagged to the press, no wire release. His words, as posted by Bloomberg’s Eric Balchunas the following day: “Bitcoiners can do in-kind exchanges of BTC for IBIT for $1 million minimum now. It used to be $25 million.” The stated long-term goal is to remove the minimum entirely.

Two corrections to the framing you will see elsewhere

First: this is not a BlackRock story, it is an industry shift. Bloomberg’s 25 August piece reports that Bitwise cut its own in-kind minimum from $100 million to $3 million. Two issuers, in the same window, dropping the entry point by 96% and 97% respectively. Reading it as a BlackRock competitive move misses that the constraint being relaxed is operational rather than commercial.

Second: a $1 million floor is not a retail opening, and several outlets have implied it is. Only authorised participants transact directly with the trust. A holder wanting to convert still needs a broker or a trading desk to intermediate, and the $1m figure is the size at which that intermediation becomes worth arranging. What actually changed is the population it reaches: at $25 million the mechanism served large funds and a handful of very early holders. At $1 million it reaches registered investment advisers, family offices and mid-sized trading firms. That is a much larger cohort of people holding appreciated coins with a tax problem, which is the real demand driver here — an in-kind conversion is not a disposal.

James Seyffart of Bloomberg Intelligence on how the ETF complex is actually structured, in conversation with Natalie Brunell:

https://www.youtube.com/watch?v=zYd7qM03zOs

Last night’s flow row, and a Grayscale pattern worth learning

US spot bitcoin ETFs took in $232.2 million on Wednesday 26 August, an eighth consecutive positive session. The streak now runs to $2,801.9 million across eight sessions, an average of $350.24 million a day. August month-to-date stands at $3,282.0 million over 18 sessions.

IBIT took $200.8 million of it, or 86.5% — down from Tuesday’s 90.5%, up from Monday’s 61.9%. The headline underneath, though, is going to be Grayscale, because GBTC printed −$50.4 million, its first outflow since 13 August.

Look one column across.

Every session this month on which GBTC has reported an outflow, Grayscale’s own Mini Trust has reported an inflow of comparable size. Last night the Mini took in $46.8 million, its largest single session of August, offsetting 92.9% of the GBTC number. The pair netted minus $3.6 million.

Across the whole month the arithmetic is starker still: GBTC −$110.0 million, the Mini Trust +$189.2 million, and the Grayscale complex a net receiver of $79.2 million. The sponsor whose outflows get headlined has taken in money in August. What the GBTC line mostly measures is holders migrating within one issuer from a 1.50% fee to a cheaper share class — a fee decision, not an exit from bitcoin.

This is the same category of error as the one at the top of this piece. A number that is arithmetically correct describes a completely different event from the one the headline implies. Our guide to reading the daily flow table covers the four commonest ways it misleads; sponsor-internal migration is the one that catches people most often.

Strip out both IBIT and the Grayscale complex and the rest of the field took $35.0 million — FBTC $25.6m, BITB $6.0m, MSBT $3.4m — against $22.9 million on Tuesday, a 52.8% improvement. Breadth outside the two giants widened on a smaller headline day. On Tuesday we reported it narrowing on a larger one. Both are true and neither is a trend yet.

CNBC’s report on IBIT overtaking GBTC as the largest spot bitcoin fund — the migration this week’s row is still working through:

https://www.youtube.com/watch?v=YFx0F3GaQh8

Where this leaves the month

Two markers ride on the remaining sessions. Z3 asked whether cumulative flows across 24–27 August would finish above zero; with three rows in at +$884.1 million, it is settled in all but name. B2 asks whether August beats October 2025’s $3,424.9 million, which requires $142.9 million across the three sessions left — $47.6 million each, against a running average seven times that. It would take a reversal to fail.

And a caveat we will keep repeating: none of the in-kind conversion volume appears in any of those numbers. Flow tables record creations and redemptions in dollar terms as reported by the issuers; a conversion that moves existing coins into the trust is not new money and should not be counted as such. When the $5 billion figure starts appearing in month-end summaries alongside the $3,282.0 million of August flows, as it will, they are measuring two different things.

Investment disclaimer. This article is journalism, not investment advice. Bitcoin and other digital assets are volatile and you can lose the entire amount you put in. Nothing here is a recommendation to buy, sell or hold any asset. Figures are as of the timestamps stated and change continuously. Do your own research and consider taking advice from a licensed professional before making any financial decision.