The golden cross is a technical indicator that occurs when a stock's 50-day moving average crosses above its 200-day moving average. This is generally considered a bullish signal, suggesting that the stock's long-term trend may be changing. In the case of AvalonBay Communities, the golden cross could indicate a positive short-term impact on the stock price. However, it's important to note that seasoned investors use the golden cross as a signal to start looking for long positions based on other factors, such as price levels and company fundamentals.