GTA V: Stock Locations: Post Op

Sometimes Their competitor's trucks are there as well.

Post Op is a postal delivery company. Their main competitor is Go Postal. Their delivery office is located on the Elysian Island.

GTA V: Stock Locations: Cluckin Bell

A lot of dead chickens want revenge

On way to make money in the stock market is to blow up the competition. If you want Cluckin Bell CLK stock to go down and Taco Bomb TBO to go up. Blow up and create general mayhem at their farm factory. It won't be much but it is will be enough to consider.