I’ve been buying the Pompeian brand from Costco. A 68 oz. bottle lasts us half the year.
The bottle (plastic jug) lists a bunch of different countries (CA, too) supplying the olives. On this particular jug (there is a code on the back) it is claiming Chile and US olives. I’d assume they make them in batches, depending upon olive supply from whatever countries.
A family friend used to be ‘The Spice Guy’ for Oscar Mayer. They have something like a dozen different spice recipes for making Bologna - and blend them depending upon what various spices are selling for at any given time, ensuring that their Bologna always tastes the same, but they don’t have to change the price every few weeks. ;)