How do you reinvest your dividends from stocks? Do you still have to make another trade on the same stocks with the dividends collected by doing it manually and incur trading fees? Thanks.?

This depends on:

-the absolute value of the dividend sum

-the price of the equity you would like to

buy again

-the brokerage fees (0.00 USD, f.ex. already with TD Ameritrade or Charles Schwab)

-your acceptancw of relative cost level(commission fee as percentage of trading value)

-your expected average capital growth rate of that equity (that if course you will never know for sure for the future)

Commission fees of up to 0.25% are maybe already expensive by modern standards, but an acceptable number, if you take a longterm Buy&Hold approach.

Otherwise You could wait a bit and aggregate different dividends together.​​​

Yes, the dividends credited to your bank account are in cash, to reinvest the dividends you have to make another trade.

It would be good to have a service that automatically reinvests dividends but unfortunately, I don't think theres one present in the market. And contrary to suggestions on how you should reinvests dividends, unless your dividends adds up to thousands, reinvesting dividends whilst incurring commission costs isn't very worth it.

Cash dividends are given in cash, so you will need to buy in yourself.

Unless the company offer you discount to purchase as option, you will need to manually buy in.