Bitcoin ETF Inflows Cool to $924M as August's Rally Stalls Near $80,000
The week in flows
US spot Bitcoin ETFs took in +$924.5M net over the five sessions from August 24 through August 28 — a positive week, but a sharp deceleration from the +$1,917.8M posted the week before. Four of the five sessions closed green: +$337.6M on August 24, +$314.3M on August 25, +$232.2M on August 26, and +$242.3M on August 27, before the week ended on a -$201.9M outflow on August 28 — the single worst session of the month and the first negative print in nine trading sessions.
That nine-session run is the more remarkable number. Counting back through the prior week's recap, the category was positive every single session from August 17 through August 27, absorbing +$3,044.2M across those nine days before Friday broke the streak. A run that long doesn't end for no reason: Bitcoin had rallied hard all month, pushing above $80,000 on Tuesday, August 25 for the first time since May, and touched an intraday high near $81,330 on Thursday, August 27. It could not hold that level. By Friday the price had slid back into the $76,800-$79,100 range as traders took profits into resistance, and ETF flows turned with it. The category's own flow-pulse reading confirms the shift: the August 28 session posted a -0.96 z-score against the fund's two-year history, in roughly the bottom 16% of all sessions since inception — not an extreme outlier, but a clean reversal signal after two weeks of unusually strong readings.
The deceleration shows up across every rolling window bryptoflows tracks. The five-session average is now +$184.9M, down from north of $380M a week ago, and the five-day flow-acceleration reading has swung to -198.66 — a mechanical confirmation that momentum, not just the daily print, turned negative into the weekend. The three-session average of +$90.9M is softer still. None of this erases what was a genuinely strong month up to this point; it does mean the easiest, most one-directional stretch of the rally is behind this reporting window.
Where the inflows are concentrated
BlackRock's IBIT was, once again, the entire story. The fund took in +$938.3M for the week — 101.5% of the category's net demand, more than the whole complex combined, because most other products finished the week in the red. Grayscale's newer BTC "mini" trust added +$81.9M, Fidelity's FBTC +$62.0M, and Morgan Stanley's MSBT +$25.3M, the latter now riding a six-session positive streak. Combined, Grayscale's two vehicles (GBTC plus the mini trust) netted +$4.3M for the week — GBTC itself shed -$77.6M, offset almost entirely by inflows into its newer sibling.
Three products finished the week negative: ARK 21Shares' ARKB (-$85.2M, the week's largest decliner), VanEck's HODL (-$4.2M), and Bitwise's BITB (-$16.0M). All three of those funds' worst sessions landed on Friday, August 28, alongside IBIT's own -$33.4M — the day the broader rally stalled.
Breadth tracked the week's arc closely. Monday and Tuesday were broad (6 of 12 and 5 of 12 products positive, none negative), Wednesday and Thursday stayed net positive but saw the first cracks (one and two products red, respectively), and Friday collapsed to just 1 of 12 products positive — an 8.3% breadth reading, among the weakest sessions of the year. Single-session product concentration on the 28th read 0.35 on the HHI scale; life-to-date, product concentration (0.405) and issuer concentration (0.436) sit in the same elevated range this recap has flagged for months, with IBIT alone still responsible for a 115.8% contribution to net flow since inception against Grayscale's combined -45.3% drag.
Zooming out
Cumulative net flow into the category since inception now stands at +$54.70B, up from +$53.78B a week ago — this week's +$924.5M inflow accounts for essentially all of the gain. The drawdown from the category's all-time cumulative peak of $62.74B has narrowed to -$8.04B, or 12.8%, continuing to close from 14.3% a week ago and 18.1% at the end of July. That six-week arc — an 18% hole shrinking to under 13% — is the more durable story sitting underneath this week's softer print.
Period totals: week-to-date +$924.5M, month-to-date +$3,322.4M, quarter-to-date +$3,495.2M, and year-to-date -$1,894.6M — an improvement of exactly this week's inflow from the -$2,819.1M year-to-date figure reported a week ago. Even after Friday's reversal, 2026 as a whole is still running behind, but the gap it needs to close has been cut by more than a third since the rally began in mid-August.
Strategy: eighth straight week without a bitcoin purchase, but a record capital raise
bryptoflows' own treasury dataset still shows Strategy's most recent disclosed bitcoin transaction as the August 3 8-K covered in prior editions: a sale of 1,638 BTC for $104.73M at an average price of $63,957, leaving holdings at 842,138 BTC against a $63.51B cost basis ($75,419 average cost). That figure is now four weekly filing dates old in the API's own history — the pipeline has not yet ingested the bitcoin-holdings line from the August 10, 17, or 24 filings, even though its financing dataset is current through August 24.
That financing data is itself the headline. Strategy's August 24 filing disclosed 18,261,118 shares sold via the at-the-market common program for $2,006.5M in net proceeds — by far the largest single week of the year, roughly six times the $333.7M raised the week before. Combined available capacity across all five programs (common stock plus STRC, STRD, STRF, and STRK preferred) now stands at $44,939.1M.
SEC filings retrieved directly this week fill in what bryptoflows' own dataset hasn't yet ingested, and they describe a company that has stopped transacting in bitcoin altogether rather than resuming purchases. The August 10 8-K disclosed a sale of 1,690 BTC for $108.6M at an average price of $64,262 — again below the company's own cost basis, a further realized loss — covering the period August 3-9 and taking holdings to 840,447 BTC. The August 24 8-K discloses no bitcoin transaction at all for the August 17-23 period: holdings unchanged at 840,447 BTC, average cost $75,385. Building on last week's reporting of a seventh straight pauseless week, that makes eight consecutive weekly filings — spanning two disclosed sales and several flat weeks — without a single bitcoin purchase, per Investing.com's coverage of the filing.
The same filing introduced something new: a "USD Cash" liquidity pool, a fresh component of Strategy's Digital Credit Capital Framework, funded directly by this week's outsized stock sale. Of the $2,006.5M raised, $136.4M went to STRC preferred-share repurchases, $300.0M increased the USD Reserve to $5.10B, and the remainder — roughly $1.59B — seeded the new USD Cash account, which the company says gives management a more flexible pool it can deploy toward future bitcoin purchases, preferred dividends, buybacks, or debt reduction. It is a capital-structure move, not a treasury one: no bitcoin changed hands, but Strategy now sits on meaningfully more discretionary dry powder than it did a week ago.
One more figure is worth noting without bryptoflows' own dataset to confirm it directly: at an average cost of roughly $75,385 per coin and Bitcoin trading in the high $70,000s to low $80,000s this week, Strategy's 840,447 BTC position has swung back into a modest unrealized gain — a reversal from three weeks ago, when a sub-$65,000 print had it underwater against its own cost basis.
What to watch
- Whether Strategy's next filing, expected around September 1, breaks the eight-week bitcoin-purchase pause — especially with roughly $1.59B of newly designated USD Cash liquidity now on hand.
- Whether bryptoflows' own MSTR dataset catches up to the August 10, 17, and 24 filings outside reporting has already described.
- Whether Bitcoin can clear the $80,000-$82,000 resistance zone that capped it this week, or Friday's pullback marks the top of this leg.
- Whether ETF breadth recovers from Friday's 1-of-12 reading or the late-week narrowing extends into next week.
- Whether IBIT's outsized share of net demand — over 100% of the week's total — persists, or the smaller funds stabilize.
- The MSCI index-exclusion consultation on Strategy, with comments due September 30 and a decision October 16, still hangs over the stock regardless of which way the treasury moves next.
Track the flow data live on the flow pulse overview and ETF flow dashboards, and Strategy's full treasury and financing history on the MSTR breakdown. Flow and treasury figures throughout are read directly from bryptoflows' own API — ETF flows from Farside Investors, Strategy detail from SEC filings; price and outside-filing figures are sourced to the reporting linked above, retrieved August 29, 2026.