5 Best Robotics Stocks for 2021 5. Raytheon Technologies Corporation (NYSE: RTX) Raytheon Technologies Corporation (NYSE: RTX) is a Waltham-based multinational company working in the aerospace and defense industries. The engineering and technology division of the company works on robotics and markets an exoskeleton suit for use by soldiers that enhances their strength, agility, and endurance capabilities. The suit, named XOS, was first made in 2010 and is sometimes dubbed the ‘Iron Man Suit’. Raytheon has developed many successful new models of this robotic product since and is working on newer ones as well. The company has a market cap of over $118 billion and posted more than $56 billion in profits in December 2020. Last month, the company secured a $518 million contract with the US Air Force for a new medium air missile system. The contract also involves foreign military sales and is expected to be completed by 2023. As US President Biden pursues a plan to tax American companies that have businesses overseas, Raytheon earlier this month said the plan could cost the firm $1 billion and would also affect research and development projects.