Analyst ratings and price targets can significantly influence a company's stock price. In this case, Goldman Sachs, a highly influential financial institution, has reinstated Extra Space Storage with a Buy rating and a price target of $153. This suggests that they believe the company's stock is undervalued at its current price and has the potential to reach $153. This positive outlook could lead to increased investor confidence and demand for the stock, potentially driving its price up in the short term.