 ARLINGTON, Va.--BUSINESS WIRE--ETRADE Financial Holdings, LLC today released the data from its monthly sector rotation study, based on the ETRADE customer notional net percentage buysell behavior for stocks that comprise the SP 500 sectors. About ETRADE Financial and Important Notices ETRADE Financial Holdings, LLC and its subsidiaries provide financial services including brokerage and banking products and services to retail customers. Securities products and services are offered by 