$ZAPP -46.3% วันนี้ — อะไรคือสาเหตุ?

Looks like they announced a capital raise at a significant discount yesterday. The market is reacting to the dilution and the low price of the new shares.

Wow, that's a big drop. I'm new to tracking these penny stocks, is there usually a specific news event that triggers something like this, or can it just be market sentiment?