PMI与市场风格- AMEX:XLB ：Materials
- AMEX:XLC ：Communication Services
- AMEX:XLE ：Energy
- AMEX:XLF ：Financials
- AMEX:XLI ：Industrials
- AMEX:XLK ：Technology
- AMEX:XLP ：Consumer Staples
- AMEX:XLRE ：Real Estate
- AMEX:XLU ：Utilities
- AMEX:XLV ：Health Care
- AMEX:XLY ：Consumer Discretiona
