为何CBOE VIX指数“失灵”？本次市场波动中最值得深思的现象是CBOE波动率指数（VIX）的表现。VIX指数通常被称为“恐慌指数”，用于衡量市场对未来30天标普500指数波动性的预期。在过往的重大地缘危机（如2008年金融危机和2020年疫情爆发初期）中，VIX指数往往会飙升至50甚至80以上，见下图。
Robot vacuum prices often trend in the high hundreds of dollars, so for under $300 this model from Shark is a real steal. It maps your home using 360° LiDAR technology, allowing it to clean methodically while detecting and avoiding obstacles like shoes or furniture. It also has a bagless design and a self-emptying base. Here it can hold up to 60 days of dirt, while HEPA filtration captures 99.97% of dust and allergens. If you have pets at home, the self-cleaning brush roll will become your new best friend — say goodbye to vacuum hair tangles.
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