Quick summary
100 to 1,000 BTC band reversed a month-long gain, returning 28,350 BTC overall
1,000 to 10,000 BTC band gained about 23,700 BTC, mostly in one session
Exchanges saw 11,700 BTC net outflow over 30 days, with recent inflows clustering
BTC closed at $76,358 on September 17, flat weekly but up 18 percent monthly
Over the past 30 days, the 100-1,000 BTC output band added roughly 50,300 BTC, the largest gain of any band on both an absolute and percentage basis. Most of that gain has unwound since September 5: the band is down about 28,350 BTC from its peak, including a 17,620 BTC pullback in the final seven days alone. In short: last month's largest gainer among Bitcoin's output bands has become this week's largest decliner.
BTC Price Context
BTC/USD (all-exchange, spot) closed at $76,358 on September 17, 2026 up 0.27% on the day, down 0.23% over seven days, and up 18.06% over 30 days. Price and data cutoffs align on the same date; no lag to record.
Table A: Bitcoin Output Balances
Output size | BTC at D | 24h change | 7d change | 30d change | 30d growth | Supply share |
< 0.001 BTC | 86,848 | +38 | +161 | +324 | +0.4% | 0.4% |
0.001-0.01 BTC | 381,697 | -15 | +268 | -626 | -0.2% | 1.9% |
0.01-1 BTC | 1,228,983 | +98 | +1,365 | -2,914 | -0.2% | 6.1% |
1-10 BTC | 2,255,055 | +1,311 | +3,338 | +11 | +0.0% | 11.2% |
10-100 BTC | 4,571,300 | -7,603 | -6,224 | -17,008 | -0.4% | 22.8% |
100-1,000 BTC | 5,725,644 | -9,526 | -17,623 | +50,295 | +0.9% | 28.5% |
1,000-10,000 BTC | 4,272,097 | +18,393 | +23,686 | -13,520 | -0.3% | 21.3% |
10,000+ BTC | 1,564,225 | -2,247 | -1,656 | -2,908 | -0.2% | 7.8% |
Output sizes do not identify owners. Splitting and consolidating coins can move balances between bands. Supply share uses the total BTC measured across these bands.
Table B: Exchange Activity (All-Exchange Netflow)
Metric | Latest complete day | Last 7 days | Last 30 days |
Net exchange flow, BTC | +4,099 | +13,659 | -11,739 |
Data sourced from CryptoQuant.
Reading the flow number: A positive number means more coins moved onto exchanges than left; a negative number means more coins left than arrived, though a transfer alone doesn't confirm whether it was a sale, a purchase, or something else, like a custody deposit or a transfer between exchanges.
The 30 days before this report (July 19 to August 18): Saw a net inflow of +18,266 BTC onto exchanges, while the most recent 30 days show the opposite, a net outflow of -11,739 BTC. These are two separate, back-to-back periods, not a running total.
Three Bitcoin Holding Observations
This week's Bitcoin balance and flow data trace one thread: the band that gained the most coins this month has already started giving them back, a big chunk of this week's biggest move happened in a single day rather than building gradually.
What changed
100-1,000 BTC Band: Monthly Leader, Weekly Laggard
100-1,000 BTC band: Added the most coins of any band this month (+50,295 BTC, +0.89%) but lost the most this week (-17,623 BTC, -0.31%).
10-100 BTC band: Lost the most coins of any band this month (-17,008 BTC, -0.37%).
1,000-10,000 BTC band: Gained the most this week (+23,686 BTC, +0.56%), reversing its own monthly loss.
Did the changes persist
78% of the Week's Band Gain Came in One Daily Reading
100-1,000 BTC band: The monthly gain already peaked on September 5 and has been falling since, the 30-day figure describes a trend that's already turned.
1,000-10,000 BTC band: 78% of this week's gain landed in a single day (September 16-17), one large move, not a steady build.
Exchange flows: 86% of this week's net inflow arrived in the last three days. The full month still reads as net outflow, so the shift toward inflow is recent and not yet confirmed.
What remains uncertain
Output-Band Data Can't Identify Who Moved Coins
Who's moving coins: Balance data can't show who is buying, selling, or simply reorganizing existing coins.
The September 16-17 jump: Could be real accumulation, or several smaller wallets merging their coins into one, the data can't tell the two apart.
What to Watch Next
Whether the 100-1,000 BTC band's decline extends through a second week, and whether exchange netflow holds positive for three or more further sessions, both would distinguish a developing trend from the single-session moves recorded this week.
All data and figures in this report are sourced from CryptoQuant. Coinjuice thanks CryptoQuant for supporting independent Bitcoin research through its Verified Author program, see more Coinjuice Quicktake posts on CryptoQuant.
Readers looking for the groundwork first can start with the ebook, "Trade Bitcoin and Altcoins Without Liquidations, Indicators, or Guesswork" full PRO access and pricing are on the Coinjuice pricing page.
FAQ
What change occurred in the 100 to 1,000 BTC output band over the past month?
Over the past 30 days, the 100 to 1,000 BTC band added roughly 50,300 BTC, the largest gain of any size band, but after peaking on September 5th it reversed, giving back about 28,350 BTC from its high.
How did the 1,000 to 10,000 BTC band behave during the past week?
The 1,000 to 10,000 BTC band posted the week's largest gain, adding almost 23,700 BTC, with 78 percent of that increase occurring in a single session from September 16th into the 17th.
What do recent exchange flows suggest about BTC movement?
Over the past 30 days there was a net outflow of nearly 11,700 BTC from labelled exchange wallets, but 86 percent of the past week's net inflow arrived in the last three sessions, hinting at a possible shift from outflow to inflow that is still too recent to confirm.
Did BTC’s price move significantly by September 17th, and what explains the observed on-chain shifts?
BTC closed at $76,358 on September 17th, essentially flat on the day and week but up 18 percent over the last 30-days, and the observed shifts between output bands may result from wallets splitting or combining outputs rather than clear buying or selling activity.
Disclaimer
The information provided in this article is for informational purposes only. It is not intended to be, nor should it be construed as, financial advice. We do not make any warranties regarding the completeness, reliability, or accuracy of this information. All investments involve risk, and past performance does not guarantee future results. We recommend consulting a financial advisor before making any investment decisions.
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Written by
Andrew Kamsky
Andrew Kamsky is a Bitcoin analyst. He spent a decade in traditional finance across a Big Four firm and a listed fintech bank before going deep on Bitcoin full-time.
