Janney Montgomery Scott LLC’s holdings in Vanguard Mega Cap ETF were worth $19,859,000 at the end of the most recent reporting period. Get Vanguard Mega Cap ETF alerts:Vanguard Mega Cap ETF Price PerformanceMGC opened at $245.24 on Friday. About Vanguard Mega Cap ETFThe Vanguard Mega Cap ETF (MGC) is an exchange-traded fund that is based on the CRSP US Mega Cap index, a market-cap-weighted index that covers 70% of the market capitalization of the US equity market. Visit HoldingsChannel.com to get the latest 13F filings and insider trades for Vanguard Mega Cap ETF (NYSEARCA:MGC – Free Report). Receive News & Ratings for Vanguard Mega Cap ETF Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Vanguard Mega Cap ETF and related companies with MarketBeat.com's FREE daily email newsletter.