UnitedHealth Group (UNH) shares have experienced a notable rally, closing above their 50-day moving average for the first time since April 2025. This surge has been driven by major investments from prominent investors Warren Buffett and Michael Burry. Berkshire Hathaway, led by Buffett, acquired a $1.57 billion stake in UnitedHealth, marking a strategic shift towards health, housing, and steel sectors while exiting telecom, including selling its T-Mobile holdings. This move has boosted market confidence in UnitedHealth's growth prospects despite previous challenges. Following Berkshire's purchase, UNH stock jumped over 14% and has been trading above $300, with resistance levels identified near $325 to $326. Analysts highlight the importance of the $303-$304 support zone for sustaining the current upward momentum. Meanwhile, broader market activity reflected in the E-mini S&P 500 futures (#ES_F) shows a focus on key technical levels, with 6469 being a critical pivot point repeatedly tested over the past week. The futures market has experienced choppy conditions, with support and resistance levels around 6453-6463 and 6474-6485 respectively, indicating cautious investor sentiment amid ongoing volatility. Overall, the Warren Buffett effect continues to influence UnitedHealth's stock performance positively, while the S&P 500 futures market remains range-bound, awaiting a clear directional catalyst.