Keep calm and don't panic. Anyone can keep up with the unpredictability of policy changes? Keep up with updates and take some time to revisit stock picks/risk management in this uncertain and highly volatile environment.
Definitely NO to go all in. Think okay to trade/invest cautiously in quality stocks with spare funds if panic strikes again but no way to know the bottom.
SG's 3 big bank stocks are looking very attractive with big price drops. Definitely going to invest more on further dips with lower valuations and attractive dividend yields using any spare funds.