As for the worst SPDRs in December, that dubious honor goes to the Technology Select Sector SPDR (NYSEArca: XLK) and the Consumer Staples Select Sector SPDR (NYSEArca: XLP), according to CXO. To be fair to XLK and XLP, both usually generate positive December returns.
Energy Select Sector SPDR
ETF Trends editorial team contributed to this post.