Discrepancy in Results and Price

General
1
  1. Why did Laurus lab Rally almost > 10% today 28th Jan 2022 despite poor results yesterday 27th Jan 2022 ?
  2. Why didn’t Kotak bank rally despite good results at 1350 hrs with two more hours left for trading?
2
  1. Does poor results mean you have to sell a stock?
  2. Does good results mean you have to buy a stock?