Solar energy stocks have been hammered over the last month in a broad industry sell-off that may be unnerving to investors. You can see below that SunPower (NASDAQ: SPWR) has been hit hardest, but SolarEdge (NASDAQ: SEDG), Sunrun (NASDAQ: RUN), and Enphase Energy (NASDAQ: ENPH) have all fallen of late.
What you can also see below is that these stocks have moved together, especially on big down days. That’s because there are some forces working against the entire industry. And the residential solar stocks mentioned may have the most uncertain futures when it comes to forces both within and outside of their control.