Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Why do stocks tend to trade at high volumes at the end of (or start) the trading day?
Trading at the start of the day is highest because of news flows that may have come after the close of the previous day.  And trading at the end of the day is highest because of expected news flows after closing hours. Moreover, there are many day traders who buy in the morning without making any payment for purchase and such traders have to sell by evening or else they will have to make the payment for the purchases which they have made.