On January 21, 2026 (yesterday), BTC experienced a deep correction overall, losing the 90,000 level, with a daily low of $87,838, and closing around $88,900. The 24-hour decline was approximately 3.2%-3.5%, dominated by bears, with increased volatility.

1. Core Data (as of 24:00 on the 21st)

- Price Range: $87,838 - $90,716
- Key Levels: Broken below the $90,000 mark, with $88,000 becoming the intra-day focal point
- Market Sentiment: Total network liquidations of about $1.09 billion in 24 hours, with a high proportion of longs; market fear and greed index dropped to 31 (fear)
- Related Markets: US stocks plunged (Nasdaq -2.39%), US bond yields rose, US dollar index weakened, risk assets broadly declined

2. Core Drivers

- Macro Shocks: Escalation of US-EU tariff disputes, volatility in the Japanese bond market, increased global risk aversion, capital fleeing risk assets
- Technical Breakdowns: Broke below short-term daily moving averages and previous consolidation zones; 4-hour chart shows a downward channel, with bearish momentum releasing
- Sentiment and Capital: Institutional profit-taking combined with retail stop-losses, derivatives market volatility amplifies, intensifying downward price movement

3. Technical and Trading References

- Resistance: $89,500 - $90,000 (rebound resistance), $90,700 - $91,000 (yesterday's high)
- Support: $88,000 - $87,500 (intraday low), $87,000 - $86,500 (previous support zone)
- Strategy: Focus on shorting rebounds above, cautiously consider long positions on dips, strictly control position sizes, monitor the validity of the $88,000 support, avoid blind bottom-fishing

4. Short-term Outlook

Overall in a period of macro pressure and technical adjustment resonance. If the $87,000 support is broken, further decline to $85,000 - $86,000 may occur; if support holds, expect weak oscillation and recovery within the $88,000 - $90,000 range, pending stabilization of sentiment and capital flows.