字幕表 動画を再生する 英語字幕をプリント What is the Halloween Strategy and Halloween Effect? The Halloween strategy, sometimes referred to as the Halloween effect or Halloween indicator, is a market timing approach. Here's the gist: Stocks tend to perform better from October 31 (Halloween) to May 1 than from May through October's end. Advocates of this strategy propose buying stocks in November, holding them over the winter, and then selling in April. They often advise reducing stock investments during the summer months or even avoiding them altogether. This approach starkly contrasts the classic 'buy-and-hold' strategy, where investors maintain their positions for the long term, irrespective of market fluctuations.