RESEARCH ARCHIVE / Bitcoin
Bitcoin · 2026-09-21 Daily assessment archive
ARCHIVED MARKET STATE / Market conditions for the period
- Trend score / −3 to +3
- +2.29
- Signal consistency
- 89%
- Archived close / USDT / BTC
- 86,620.00
System assessment “bullish”, trend score +2.29（confidence 89%）, previous day: “neutral with a bullish bias”（+0.37）. BTC closed at $86,620.00, daily change +6.70%, intraday range amplitude 8.06%; 3-day +7.09%, 7-day +10.78%. Daily EMA10/EMA20 is in a bullish crossover state（spread +1.75%, 2026-08-19 bullish crossover, 33 days ago）. Derivatives, perpetual open interest +1.31%, daily average funding rate +0.0077%（previous 7 days +0.0069%）, taker buy/sell ratio 1.101, market-wide account long/short ratio 0.961 → 0.893, top trader account long/short ratio 1.116 → 0.963. Fear & Greed Index 70（Greed）. Main bullish factors: daily change, 3-day momentum; Main bearish factors: change in top trader long/short ratio.
The above is the archive for 2026-09-21. The original uses “confidence”; this site interprets it as signal agreement, which cannot directly be treated as a probability of rising prices or predictive accuracy. The original summary retains its wording at the time.
01 / Data and market review
Key data
- Close $86,620.00, UTC 2026-09-21 00:00 open $81,178.01, daily change +6.70% (previous close $81,178.00)
- Intraday high $87,395.67 / low $80,850.22, range 8.06%; 30-day range $74,967.97 – $87,395.67
- Momentum: 3-day +7.09%, 7-day +10.78%, 30-day +12.38%; 30-day daily volatility 1.92%
- Daily EMA10 $80,308.55 / EMA20 $78,794.86, spread +1.75% (of closing price), golden-cross status (EMA10 above EMA20); latest crossover: 2026-08-19 golden cross, 33 days ago
- Spot volume 31,963 BTC (approximately 2.703 billion USDT); latest 7-day volume versus preceding 7 days +26.50%
- Perpetual open interest 107,778 → 109,189 BTC（+1.31%, +1,411 BTC）, notional value approximately USD 9.454 billion
- Daily average funding rate +0.0077%（08:00 +0.0100% / 16:00 +0.0055% / next day 00:00 +0.0077%）, previous 7-day average +0.0069%, approximately annualized +8.4%
- 24h aggregate taker buy/sell ratio 1.101 (buy 152,332 / sell 138,372 BTC); 13/24 hours buyer-dominated
- Market-wide account long/short ratio 0.961 → 0.893 (-7.11%); top-trader account long/short ratio 1.116 → 0.963 (-13.70%); top-trader position long/short ratio closed at 2.178
- Fear & Greed Index 71 → 70 (Greed, -1)
24H market review
- Early session (UTC 00:00–06:00): $81,178.01 → $81,550.00, +0.46%, range $80,850.22 – $82,100.00, volume 3,802 BTC (11.9% of daily total)
- Early afternoon（UTC 06:00–12:00）: $81,550.01 → $84,887.19, +4.09%, range $81,400.00 – $85,299.87, volume 12,385 BTC（of daily volume 38.7%）, the day's elevated-volume session
- Afternoon (UTC 12:00–18:00): $84,887.19 → $85,897.21, +1.19%, range $84,778.00 – $86,344.70, volume 10,543 BTC (33% of daily total)
- Closing session (UTC 18:00–24:00): $85,897.20 → $86,620.00, +0.84%, range $85,800.00 – $87,395.67, volume 5,234 BTC (16.4% of daily total)
02 / Scoring basis
| Factor | Weight | Standardized value z | Score contribution | Availability status |
|---|---|---|---|---|
| Daily change | 25% | 3.000 | +1.200 | Provided |
| 3-day momentum | 10% | 2.056 | +0.329 | Provided |
| 7-day momentum | 10% | 2.012 | +0.322 | Provided |
| Daily EMA trend | 10% | 0.908 | +0.145 | Provided |
| Change in open interest | 10% | 0.437 | +0.070 | Provided |
| Funding-rate change | 5% | 0.154 | +0.012 | Provided |
| Funding-rate crowding | 5% | 0.114 | +0.009 | Provided |
| Aggressive buy/sell ratio | 10% | 2.018 | +0.323 | Provided |
| Change in retail long/short ratio | 5% | 1.422 | +0.114 | Provided |
| Change in top-trader long/short ratio | 5% | -2.740 | -0.219 | Provided |
| Change in Fear & Greed Index | 5% | -0.125 | -0.010 | Provided |
Factor values and contributions follow this period's scoring version 2026-09-25.2 and are not recalculated on the detail page.
03 / AI analysis and content status
Continue checking the data and factors above, or open the current asset page to review other editions.
04 / Timing, measurement bases and data sources
Data window 2026-09-21 00:00:00 UTC → 2026-09-22 00:00:00 UTC. Data archive generated 2026-09-25 14:54:20.268 UTC; Snapshot included on this page 2026-10-05 13:28:08 UTC.
Bitcoin closing prices use Binance BTCUSDT spot, in USDT / BTC; derivatives indicators such as open interest and funding rates use their respective contract data.
https://data-api.binance.vision/api/v3/klines (1d)
https://data-api.binance.vision/api/v3/klines (6h)
https://www.binance.com
https://www.binance.com
https://www.binance.com
https://www.binance.com
https://www.binance.com
https://www.binance.com
https://api.alternative.me/fng/
This page's data comes from existing site archives.View original daily JSON ↗
FACTS / SOURCES / CONTEXT
Page highlights and supporting materials
What period and materials does this archive cover?
Bitcoin historical assessment for UTC trading day 2026-09-21: Data and scores · AI commentary not generated, retaining the period's data, scoring version and sources. For reviewing observations from that period; historical views do not represent current market conditions.
Material date:(UTC trading day); status: data and scores · AI text not generated. Original dates and versions are retained.