所以今天牛熊都可以用围嘴抹去不算...


Quadruple Witching

A day on which contracts for stock index futures, stock index options, stock options and single stock futures (SSF) all expire.

Investopedia explains Quadruple Witching
This is similar to the triple witching hour, except that the quadruple witching hour sees also the expiry of SSFs.

Quadruple witching days occur on the third Friday of March, June, September and December.




The last Quadruple Witching occurred on December 19th which resulted in a small-range day with volume running only slightly above the average at the time. It was a ‘dud’ in terms of normal Quadruple Witchings.

Prior to that, we had a decent range day on September 19th, with volume surging during the run-up to that Friday as price began its downslide into the October lows. That Friday took many traders by surprise as it was a sudden up-move in a down-swing that only served to delay the inevitable decline.

So, not all Quadruple Witching days result in big moves, but the intraday squiggles (price swings) can occur seemingly randomly and not follow the typical expectations of technical analysis. Funds are balancing positions and they typically are looking at their books and not their charts to do so, which can cause seemingly perfect intraday trade set-ups to fail.

So, do trade with caution today but perhaps not with extreme caution. Some retail traders take these days off and start their weekend early. In the end, it’s up to you.