引用:
原帖由 CB900 於 2013-6-4 13:28 發表
因昨天生果報以vhsi和恆生背馳下出現,做出向淡訊號,剛學
VHSI has a correlation about ~ -0.78 (not remember the exact figure), so
rising VHSI has a meaning of more people buying insurance against their portfolio.
So if HSI is rising but people not sure whether it is near the top or not, they LP
to lock profit, thus rising premium in Put (more demand).
Besides, some might sell the stock to lock profit and use part of the earning to LC in case
market keep going up, thus rising premium in Call (more demand).
In both case, premium rises and lead to higher VHSI.