Simple question about dividends

[Goldy]

If I elect to reinvest dividends does the dividend get added to my account based on the opending price of the pay date?

[feh]

If I elect to reinvest dividends does the dividend get added to my account based on the opending price of the pay date?

I believe you get the price of the asset on the ex-dividend date, which may be different from the pay date.

I am not 100% sure, however. Some googling should give you the answer.