⚠️杠杆与反向 ETF:为何它们不适合长期持有(波动率损耗)
杠杆与反向 ETF:为何它们不适合长期持有(波动率损耗)
这篇文章或许能拯救你的账户。杠杆型(2×、3×)与反向型(−1×、−2×)ETF 看似是快速获利的捷径,实则暗藏一个数学陷阱——大多数人往往在亏损之后才真正理解它。这个陷阱叫做波动率损耗。
★ 核心真相: 杠杆与反向 ETF 的设计目标,是仅在单个交易日内实现其对应倍数的收益。在更长的持有周期内,由于每日重置机制,实际结果会与"2× 指数"产生巨大偏差——在震荡市场中,即便指数回到原点,它们也会系统性亏损。
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波动率损耗如何产生(具体示例)
假设某指数初始值为 100,一只2× 杠杆 ETF 初始净值同样为 100。
| 交易日 | 指数涨跌 | 指数 | 2× ETF(每日重置) |
|---|---|---|---|
| 起始 | — | 100.0 | 100.0 |
| 第 1 日 | −10% | 90.0 | −20% → 80.0 |
| 第 2 日 | +11.1%(回到 100) | 100.0 | +22.2% → 97.8 |
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