Invesco Solar ETF is an exchange-traded fund incorporated in the USA. The Fund tracks the MAC Global Solar Energy Index which market cap weights securities in the solar energy industry including all solar technologies, the entire value chain (raw materials, manufacturing, installers, solar plant operations, financing), & related solar equipment such as power inverters/encapsulates.
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Their 1 yr return seems a bit of an outlier but if the solar industry trajectory is to go by, it will grow at slightly lower but fairly robust rates