無法排除這個可能性。這也是一個槓桿不宜開太高的理由。去年美國總統大選期間,IB就把margin requirement調高了35%本來50%的調到67.5%,本來25%的調到33.75%想要進行因子投資的人,我覺得這段podcast值得一看:
https://youtu.be/YsWgWrpzdAM@30:35 Novy-Marx: "I'm willing to believe there are lotsof nickels lying around, and if you are efficient atpicking up nickels it can be worth looking for them.but I don't think there are a lot of hundred dollar billlying around waiting to get picked up."