BTC Flow Analysis — September 27, 2021 BEAR
Monday · Minute-level BTC order flow from Binance · 1,001,487 trades
Summary
Bitcoin fell 2.3% on Monday, September 27, 2021, closing at $42,147 as sellers controlled aggregate flow with 1,161 BTC of net pressure.
BTC price (blue) and trading volume (cyan bars) per minute. Session shading: Asia (gold 00-08 UTC), Europe (green 08-14), US (red 14-00).
Flow Analysis
Sustained large-player selling throughout the day. 22 bars with trade sizes 3σ+ above normal (peak: 9.2σ), spread across 01:32–20:25 UTC. The 226 BTC of whale flow reinforced the day's selling bias.
Flow reversed midday. The first 12 hours belonged to buyers (+80 BTC), but sellers erased that and then some (-1,241 BTC) in the back half.
This was day 4 of consecutive net selling. Multi-day streaks reflect sustained conviction, not noise.
A clean, flow-driven day. The 0.89 correlation between cumulative flow and price means selling pressure was the dominant force — no hidden passive flow muddying the signal.
Cumulative buying pressure (purple, left axis) vs cumulative price return (yellow, right axis). When these diverge, flow and price are telling different stories.
Session Breakdown
US traders set the tone. 74% of directional flow — 1,161 BTC of selling — came from that single session.
Session returns: Asia +1.22%, Europe -0.40%, US -3.13%. US led the move.
| Session | Hours (UTC) | Return | Net Flow | Flow Share |
|---|---|---|---|---|
| Asia | 00:00 - 08:00 | 1.22% | 206 BTC | 13% |
| Europe | 08:00 - 14:00 | -0.40% | -206 BTC | 13% |
| US | 14:00 - 00:00 | -3.13% | -1161 BTC | 74% |
Per-minute volume split by aggressor side. Green = actively bought at the asking price. Red = actively sold at the bid price.
Regime Context
Nothing unusual for a bear-regime day. The -2.35% return was consistent with the period's average of -0.27%.
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