Retirement Planning Co of New England Inc. grew its position in UnitedHealth Group by 9.2% in the 1st quarter. Retirement Planning Co of New England Inc. now owns 591 shares of the healthcare conglomerate's stock valued at $310,000 after buying an additional 50 shares in the last quarter. Calton & Associates Inc. bought a new position in UnitedHealth Group in the 1st quarter valued at about $1,505,000. Finally, Saudi Central Bank bought a new position in UnitedHealth Group in the 1st quarter valued at about $190,000. Institutional investors own 87.86% of the company's stock.