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It doesn't have to be for everything. Disclose whenever and disallow action on the information for a period of time. This is why company earnings are disclose
by Arainach 3y ago
It doesn't have to be for everything. Disclose whenever and disallow action on the information for a period of time. This is why company earnings are disclosed after the market closes for the day - everyone has several hours to receive the information and decide what to do.
- underlipton 3y agoDoes that really help, though? During the trading day, many (I want to say most, but can't confirm it) trades don't affect prices; odd lots and trades internalized on certain trading platforms don't effect NBBO IIRC. On the other hand, pre-market and after hours trades of even single-digit shares can move the price. This is why volatility can be so high then, and why you'll often see things like stock prices moving 10, 20, 30% within a few moments of close. Sometimes it snaps back before the next trading day. Sometimes, it doesn't.