投资组合再平衡计算器
计算投资组合再平衡所需的买入和卖出操作，将资产配置恢复到目标比例，维持风险管理策略。
Stocks: Buy/Sell
-$10,000
Stocks: Buy/Sell vs Total Portfolio Value
公式
Portfolio Rebalancing
Rebalancing restores your portfolio to its target allocation after market movements cause drift.
Why Rebalance?
How to Rebalance
Trade Amount = Portfolio Value x (Target% - Current%) / 100
Positive values mean buy; negative values mean sell.
When to Rebalance
计算示例
$100,000 portfolio: 70% stocks, 25% bonds, 5% cash. Target: 60/30/10.
- 01Stocks: sell $100,000 x (60% - 70%) = -$10,000
- 02Bonds: buy $100,000 x (30% - 25%) = +$5,000
- 03Cash: add $100,000 x (10% - 5%) = +$5,000
- 04Total volume = $10,000 + $5,000 + $5,000 = $20,000
常见问题
How often should I rebalance?
Most research suggests annual or semi-annual rebalancing. More frequent rebalancing generates unnecessary transaction costs and taxes without meaningful benefit. A 5% drift threshold works well.
Can I rebalance with new contributions?
Yes, this is the most tax-efficient approach. Direct new contributions to underweight asset classes until allocation is restored. This avoids selling (and potential capital gains) entirely.
Does rebalancing hurt returns?
Over long bull markets, rebalancing may reduce returns by selling winning assets. However, it significantly reduces volatility and maximum drawdown. The risk-adjusted returns from a rebalanced portfolio are typically superior.
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