<div id="readability-page-1">“Sell in May and stay away” used to have a case. Lately, it’s mostly had a cost. The old warning says investors should reduce exposure after April and come back later in the year, usually around October or November. But S&amp;P 500 (^GSPC) history shows the seasonal map has changed a lot depending on the market era — and the modern version looks much l...</div>

标普 500 指数

2 倍做空标普 500 ETF - ProShares

标普 500 ETF - SPDR

<p>传统的投资策略 “五月卖出，远离市场” 在近年来已被证明效果不佳。历史上，投资者被建议在四月之后减少市场敞口，并在秋季回归。然而，最近的标普 500 数据表明，这一季节性趋势已经发生变化，暗示该策略可能不再有利</p>

'Sell in May' has been a bad strategy this century: Chart of the day

- “五月卖出，离开市场” 的说法曾有依据。  
- 随着市场时代变迁，标准普尔 500 指数的季节性模式发生了变化。  
- 现代市场的表现与以往大相径庭，投资者需重新评估策略。

标普 500 ETF - iShares

标普 500 ETF - Vanguard

2 倍做多标普 500 ETF - ProShares

做空标普 500 ETF - ProShares

3 倍做多标普 500 ETF - ProShares

1 倍做空标普 500 ETF - Direxion

3 倍做空标普 500 ETF - Direxion

3 倍做空标普 500 ETF - ProShares

“五月卖出” 策略在本世纪表现不佳：今日图表