Why do we need an ex-dividend date?
I think you are really concerned about the record date. The ex-dividend date itself is set by the exchange. See for example Nasdaq. The firm issuing the stock manages the declaration date, record ...
Is there a way to tell if a time series price data is reversed?
This question about reversibility of time attracted a lot of attention of econophysicists. Laws of physics guarantee no time reversion in real life (because of entropic principle): is it the same on ...
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