Analyst upgrades typically lead to positive short-term price movements as they reflect a positive change in the analyst's view of the company's future performance. The upgrade from Peer Perform to Outperform suggests a strong confidence in ELS's potential to outperform the market or its sector. The announcement of a $75 price target further indicates a bullish outlook on the stock, likely leading to increased investor interest and potentially driving the stock price up in the short term.