Do you know which company’s stock performed the best over the last 30 years? It’s a tough question because there were so many really big winners. So here are a few hints that may help. The winning company never tried to revolutionize the retail industry. Nor has it developed state-of-the-art technology, attempted to discover new medicines, or explored for oil, gas, or gold. Its products are easy to understand, can be purchased for pocket change, and never need updating.