This ETF is a powerful investment, especially during periods of market volatility.The investments you choose will make or break your portfolio, especially during periods of volatility. While the market is still near record highs right now, a downturn will eventually hit. Whether that's in 2026 or years from now, it's wise to start preparing your investments for the inevitable slump.If you're looking to protect your portfolio as much as possible, a broad-market exchange-traded fund (ETF) like the Vanguard To ...