Clean energy stocks are leaving both Nvidia and the tech-heavy Nasdaq in the dust in 2025.It's no secret that the tech-heavy Nasdaq Composite (NASDAQINDEX: ^IXIC) has led the major indices in recent years, as artificial intelligence (AI) stocks power markets higher. But so far in 2025, clean energy stocks have left the Nasdaq in the dust, with the iShares Global Clean Energy ETF (ICLN +1.58%) returning 46% year to date, compared to the Nasdaq's 20% rise.NASDAQ : ICLNiShares Trust - iShares Global Clean Ener ...