Not a lot of true robotic companies to invest in currently. Most of the companies are privately funded and they are in the devolopment stage of building out their humanoids. Most of the companies are doing POC in the manufacturing sector. It will be a couple of years before and true robotics companies go public. With that being said if you are looking for a "picks and Shovel" play....KOID is an ETF that invests in companies that are making the components that go into humanoids...think acutuators, sensors etc. Currently trades at \~$32 share.