Quick summary
Wallets holding 1,000–10,000 BTC added about 17,258 BTC in a single week
Wallets with 100–1,000 BTC gained 35,588 BTC over thirty days, then lost 6,551 BTC
Smaller wallets grew, with 1–10 BTC up 1.23 percent and sub-1 BTC also increasing
Bitcoin price reached $81,159 as exchange flows flipped from outflows to inflows
The 1,000–10,000 BTC output band added 17,257 BTC over the trailing seven days with the largest absolute weekly increase of any measured band, while the 100–1,000 BTC band, which carried the largest 30-day increase in the group at 35,587 BTC, pulled back 6,550 BTC over the same week.
Date | Bitcoin Price Close (USD) | 24h | 7d | 30d |
2026-09-20 | $81,159.64 | -0.09% | +5.68% | +3.62% |
Table A: Bitcoin Output Balances
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 (≈20,087,202 BTC at D).
Output size | BTC at D | 24h change | 7d change | 30d change | 30d growth | Supply share |
Below 0.001 BTC | 86,904.5 | +22.3 | +138.3 | +468.4 | +0.54% | 0.43% |
0.001–0.01 BTC | 381,614.1 | +35.3 | +99.0 | -156.3 | -0.04% | 1.90% |
0.01–1 BTC | 1,229,246.2 | +25.3 | +788.5 | -270.8 | -0.02% | 6.12% |
1–10 BTC | 2,252,929.6 | +65.4 | -456.5 | +2,767.3 | +1.23% | 11.22% |
10–100 BTC | 4,572,874.6 | -2,140.6 | -5,478.7 | -10,679.4 | -0.23% | 22.77% |
100–1,000 BTC | 5,735,046.9 | -1,290.8 | -6,550.5 | +35,587.6 | +0.62% | 28.55% |
1,000–10,000 BTC | 4,265,283.5 | +3,764.4 | +17,257.8 | -10,215.8 | -0.24% | 21.23% |
10,000+ BTC | 1,563,302.7 | 0.0 | -2,594.8 | -3,704.0 | -0.24% | 7.78% |
Source: CryptoQuant
Table B: Exchange Activity
Positive = net inflow to labelled exchange wallets; Negative = net outflow.
Transfers do not establish purchases or sales.
Period | Net flow, BTC |
Aug 22 – Sept 13 (first 23 days) | ≈ -11,543.00 |
Sept 14 – Sept 20 (last 7 days) | +18,512.79 |
Total: Aug 22 – Sept 20 (30 days) | +6,969.79 |
Source: CryptoQuant
Coins left exchanges most of the month, then reversed hard in the final week. Row 3 is just the sum of Rows 1 and 2.
Three Observations
What changed: The 1,000–10,000 BTC band added 17,258 BTC in a week, its biggest weekly move, reversing a 10,216 BTC decline from the prior month; the 100–1,000 BTC band did the opposite, giving back 6,551 BTC after posting the largest 30-day gain overall. Smaller wallets grew too with the 1–10 BTC band posted the best percentage gain of any band over 30 days (+1.23%), and sub-1 BTC wallets edged higher in the same window, though at a much smaller scale than the large-holder swings.
Did it hold up: Not smoothly, the 1,000–10,000 BTC jump came almost entirely from one day (Sept 17, +18,393 BTC), then partly reversed; exchange inflows were steadier, running positive for six straight days (Sept 15–20).
What's uncertain: The data can't confirm whether the jump reflects new buying or coins simply being consolidated into larger outputs, and the exchange inflow streak alone doesn't prove anyone's selling.
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Methodology / Source Note
All figures sourced from CryptoQuant. Output-band balances via the UTXO Supply Distribution endpoint; exchange flow via the All-Exchange Netflow endpoint; price via Coinbase Advanced spot (BTC/USD), daily close, UTC. Coverage: 65 completed daily observations through 2026-09-20 for balance and flow data, 35 for price. Bands reflect CryptoQuant's eight standard output-size ranges. Data retrieved 2026-09-21.
FAQ
How did Bitcoin balances change in the 1,000–10,000 BTC band over the past week and month?
The 1,000–10,000 BTC band increased by about 17,258 BTC in a single week, the largest weekly gain of any group, after having declined by around 10,216 BTC over the prior 30 days.
What happened to the 100–1,000 BTC wallet band over the last 30 days and in the final week?
The 100–1,000 BTC band saw the largest 30-day gain, up about 35,588 BTC, but then gave back about 6,551 BTC in just the final week.
How did smaller Bitcoin wallets (under 10 BTC) change over the 30-day period?
Wallets holding 1–10 BTC had the best percentage gain of any group over 30 days, up about 1.23%, and wallets holding less than 1 BTC also increased, but on a much smaller scale than larger holders.
What were the key trends in Bitcoin price and exchange flows over the month?
Bitcoin closed at $81,159.64, down about 0.09% on the day, up 5.68% over the week, and up 3.62% over the month. Exchanges saw a net outflow of about 11,543 BTC over the first 23 days, then a sharp reversal to a net inflow of about 18,513 BTC in the final week, resulting in a modest net inflow of about 6,970 BTC for the month.
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.
