The Vanguard Total Stock Market ETF (VTI), which provides broad exposure to the entire U.S. stock market, is up 0.030% in premarket trading on Tuesday. In the previous session, VTI gained 0.70%.

The Vanguard Total Stock Market ETF tracks the performance of the entire U.S. stock market. Ample diversification can help limit risk during market slumps. However, it has one significant drawback ...

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Structural and functional pulmonary MRI measurements may predict future pulmonary exacerbations among individuals with cystic fibrosis.