If an important executive of the company dies, it will certainly affect investor confidence in the short term; if someone who has nothing to do with the company dies, it will not affect the stock price. It depends on where the accident happened, whether it directly affected the company's operation, and some of them rose after the accident. For example, during the Wenchuan earthquake, copper stocks rose sharply the next day, because Sichuan is the main copper producing area in China, the output decreased and the price rose.

a fund is an institution that buys dozens of stocks, just like if you buy several stocks, the stocks fall, your assets decrease, and the corresponding fund's net value falls. On the contrary, when the stocks bought by the fund go up, the net value will increase.