Currently, ETH is in an oversold rebound and oscillation correction pattern, mainly short-term trading within the day, with strict position control and stop-losses. Be alert to geopolitical and macroeconomic disturbances.

Key levels (January 21, 17:40, current price ≈ 2970 USD)

- Support: 2900-2920 (core), 2880, 2800
- Resistance: 3000-3020 (strong resistance), 3060, 3100

Entry/Stop-loss/Target levels (by strategy)

1. Short-term rebound long positions (spot/contract)
- Entry: Gradually build positions on pullbacks to 2930-2950, light positions (≤20%)
- Stop-loss: 2900 (exit immediately if below 2900)
- Target: 3000-3020 (first take profit), hold steady for 3060, then look for 3100 on a breakout
2. Rebound resistance short positions (contract)
- Entry: Open short positions when rebounding to 3000-3020 and encountering resistance, very light position (≤10%)
- Stop-loss: 3030 (exit if effectively breaking above 3030)
- Targets: 2950, 2920, look for 2880 if broken
3. Mid-term layout (spot)
- Entry: Gradually build positions on pullback to 2880-2900, total position ≤30%
- Stop-loss: 2850
- Targets: 3100, 3200

Position sizing and risk control (must read)

- Total position ≤30%, contract positions ≤10%, avoid full or heavy positions
- Single trade stop-loss ≤3% of principal, strictly enforce without holding through losses
- Pay attention to Federal Reserve officials' speeches, EIA data, geopolitical conflicts, and regulatory news. When volatility increases, reduce positions or stay on the sidelines.