Extra Space Storage ( EXR ) is one of the top self-storage REITs on the planet that’s been expanding in recent years through several acquisitions. Right now, the stock is down ~15% over the past year whileAs of 2025, I've got over 10 years of researching companies. In total, throughout my investing life, I estimate that I researched (in depth) well over 1000 companies, from commodities like oil, natural gas, gold and copper to tech like Google or Nokia and many emerging market stocks, which I believe could ...