指数研究：反转策略
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/wiki/static/upload/15/155c3445-595b-4419-98f2-fb8ba6636edf.mp4
回测图：
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策略源码：
{{pro}}
https://bigquant.com/codeshare/166240a4-5136-46fb-8dce-77946fbd633d
https://bigquant.com/codeshare/6a442ba2-f8f2-48ca-bac2-5bf420737788
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