How to translate equal weight and sector weight?
There is specific words used for financial terms in both English and Chinese. 

equal weight: 等权(重)

e.g.: 
equal weight index: 等权(重)指数

equal weight ETF: 等权(重)交易所交易基金 or 等权(重)交易型开放式指数基金 or 等权(重)ETF (ETF is very commonly known term in finance, so you can leave it as is) 

weighted: 加权(重)

e.g.: Price weighted index: 价格加权(重)指数

SPDR S&amp;P 500 generally known as 标普500

sector is not 部门. It is generally referring to 行业 in Finance