ProShares Trust Short Real Estate ETF (NYSEArca: REK). REK has 75 holdings and an expense ratio of 0.95%.

Top holdings include: Simon Property Group Inc. (NYSE: SPG) 9%, Vornado Realty Trust (NYSE: VNO) 5%, Public Storage (NYSE: PSA) 4.2% and Annaly Capital Management Inc. (NYSE: NLY) 3.8%.

Basic Materials. The news from China also hit the materials sector as investors question what monetary tightening would mean for demand for raw goods and other items China has been gobbling up for the last year-plus.

ProShares Trust Short Basic Materials (NYSEArca: SBM). SBM has 68 holdings and an expense ratio of 0.95%.

Top holdings include: Freeport-McMoRan Copper & Gold Inc.(NYSE: FCX) 8.5%, Dow Chemical Co. (NYSE: DOW) 8.2% and E.I. DuPont de Nemours & Co. (NYSE: DD) 7.4%.

Sectors include: Chemicals 51.7%, Industrial Metals 26.8%, Mining 18% and Forestry and Paper 3.5%.

Max Chen contributed to this article.