Still buy from 3-4 times separately to avoid the volatility this year. If you dont care 10 dollars different, then do the lump sum.. VOO is a good choice.
Excellent advice. I am watching Amazon, Google, costco, voo. They all are too expensive now. Waiting for more correction. And cannot wait for Feb 19. I live in US most of my life, and do not understand any stocks in HK. Does it matter to join the course in the future? I will be attending the Feb 19. Thank you.