"There are 11 Vanguard sector exchange-traded funds (ETFs) in total: Communication Services (ticker: VOX), Consumer Discretionary (ticker: VCR), Consumer Staples (ticker: VDC), Energy (ticker: VDE), Financials (ticker: VFH), Health Care (ticker: VHT), Industrials (ticker: VIS), Information Technology (ticker: VGT), Materials (ticker: VAW), Real Estate (ticker: VNQ), Utilities (ticker: VPU). The research note should provide a compelling analysis on justifying a selection of three sectors to overweight and another three sectors to underweight in the endowments domestic equity portfolio relative to a passively managed index-based highly diversified fund for an investment period of 12 months." ... more so my question is what does the overweight and underweight mean as well as how I would go about deciding which is good and bad