#现货与合约策略 Risk Control Principles**

1. **Position Formula**:

- Single contract risk ≤ 2% of total funds

- Example: $10,000 account, stop loss $100, position size = 100 / (entry price - stop loss price)

2. **Leverage Selection**:

- Trend trading ≤ 5x

- High-frequency arbitrage ≤ 10x

- **Perpetual contract funding rate monitoring**: Rate > 0.1% avoid going long

3. **Black Swan Protection**:

- Under extreme market conditions, unilateral position ≤ 10%

- Use options for protection (e.g., buy Put to hedge BTC holdings)