Calvert does several socially responsible mutual funds. You can look them up, and see what they are buying for each fund (both their philosophy, and the companies currently in the fund) and see if that meets your approval. Mutual funds are the easiest way to go, because you don’t really have to follow them. Buying individual stocks, unless you have a broker you trust (hah!) or are willing to do lots of research on your own, is more like gambling than investing.