In the short term, if UNH really falls below last year's low point, there is really not much support below, and it may head straight to 400. If you do not intend to hold on an annual basis, or if your position is too heavy, then you need to prepare a trading plan in advance. However, if it really falls to around 400, in my opinion, it is a giveaway. At that time, I will take the opportunity to switch XLV back to UNH.
wangcaifan :