Norris Perne & French LLP MI’s holdings in Vanguard Mid-Cap ETF were worth $282,000 as of its most recent SEC filing. Get Vanguard Mid-Cap ETF alerts:Vanguard Mid-Cap ETF Stock Up 1.1%NYSEARCA:VO opened at $292.42 on Monday. About Vanguard Mid-Cap ETFVanguard Mid-Cap ETF is an exchange-traded fund. Visit HoldingsChannel.com to get the latest 13F filings and insider trades for Vanguard Mid-Cap ETF (NYSEARCA:VO – Free Report). Receive News & Ratings for Vanguard Mid-Cap ETF Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Vanguard Mid-Cap ETF and related companies with MarketBeat.com's FREE daily email newsletter.