Last month was not kind to some high-flyers from 2013, including solar.
The two recurring themes among April's worst-performing ETF plays are new technologies and China. In total, three China ETFs make the list, including an Internet-centric China fund and a tech-focused China fund. Even outside of China, however, social media, biotech and solar—all of which can be considered "new technologies"—make the list.
#10 Guggenheim Solar ETF (TAN | B-39): -8 percent
#9 Guggenheim China Technology ETF (CQQQ | C-25): -8 percent
#8 PowerShares KBW Regional Banking ETF (KBWR | B-40): -8 percent
#7 PowerShares DWA NASDAQ Momentum ETF (DWAQ | B-34): -8 percent
#6 PowerShares Golden Dragon China ETF (PGJ | A-22): -8 percent
#5 SPDR S&P Biotech ETF (XBI | A-45): -10 percent
#4 Global X Uranium ETF (URA | C-93): -11 percent
#3 KraneShares CSI China Internet ETF (KWEB | B-22): -11 percent
#2 Global X Social Media ETF (SOCL | B-24): -12 percent
#1 C-Tracks Citi Volatility ETN (CVOL | D-50): -14 percent