iShares National Muni Bond ETF makes up 1.6% of Ascent Group LLC’s investment portfolio, making the stock its 8th largest position. Get iShares National Muni Bond ETF alerts:iShares National Muni Bond ETF Price PerformanceShares of MUB opened at $106.38 on Friday. iShares National Muni Bond ETF ProfileiShares National AMT-Free Muni Bond ETF (the Fund), formerly iShares S&P National AMT-Free Municipal Bond Fund, is an exchange-traded fund (ETF). Visit HoldingsChannel.com to get the latest 13F filings and insider trades for iShares National Muni Bond ETF (NYSEARCA:MUB – Free Report). Receive News & Ratings for iShares National Muni Bond ETF Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for iShares National Muni Bond ETF and related companies with MarketBeat.com's FREE daily email newsletter.