Pioneer Municipal High Income Opportunities Fund (MIO) Stock Chart & Stock Price History $11.48 +0.01 (+0.04%) Closing price 08/4/2025 03:59 PM EasternExtended Trading$11.49 +0.01 (+0.04%) As of 08/4/2025 04:04 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Share Share Chart Stock AnalysisChartDividendHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Pioneer Municipal High Income Opportunities Fund Stock Price Performance The Pioneer Municipal High Income Opportunities Fund (MIO) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 1.92%, with a year-to-date return of -3.16%. In the past month, the stock has decreased 2.92%, reflecting recent market activity. As of the latest close, Pioneer Municipal High Income Opportunities Fund traded at $11.49 with a market cap of and volume of 35,417 shares. Receive MIO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Pioneer Municipal High Income Opportunities Fund and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+0.31%1 Month Performance-2.92%3 Month Performance-2.17%Year-To-Date Performance-3.16%1 Year Performance-1.92% MIO Stock Chart for Tuesday, August, 5, 2025 MIO Chart by TradingView Pioneer Municipal High Income Opportunities Fund Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization08/04/2025$11.49$11.49-0.04%$11.51$11.4535,417 shs$0.0008/01/2025$11.45$11.49+0.35%$11.49$11.46100,418 shs$0.0007/31/2025$11.42$11.45+0.31%$11.45$11.4047,865 shs$0.0007/30/2025$11.45$11.42-0.31%$11.44$11.4039,016 shs$0.0007/29/2025$11.40$11.45+0.44%$11.48$11.3922,783 shs$0.0007/28/2025$11.45$11.40-0.44%$11.42$11.3867,233 shs$0.0007/25/2025$11.47$11.45-0.17%$11.45$11.3747,196 shs$0.0007/24/2025$11.56$11.47-0.74%$11.52$11.4230,019 shs$0.0007/23/2025$11.56$11.56$11.57$11.5392,182 shs$0.0007/22/2025$11.56$11.56-0.04%$11.57$11.5384,432 shs$0.00 Get the Latest News and Ratings for MIO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Pioneer Municipal High Income Opportunities Fund and its competitors with MarketBeat's FREE daily newsletter. 07/21/2025$11.55$11.56+0.09%$11.58$11.51166,686 shs$0.0007/18/2025$11.55$11.55+0.04%$11.60$11.54363,004 shs$0.0007/17/2025$11.60$11.55-0.47%$11.62$11.50121,762 shs$0.0007/16/2025$11.69$11.60-0.77%$11.71$11.5974,232 shs$0.0007/15/2025$11.74$11.69-0.38%$11.78$11.67144,420 shs$0.0007/14/2025$11.75$11.74-0.09%$11.78$11.73111,072 shs$0.0007/11/2025$11.79$11.75-0.34%$11.79$11.7487,296 shs$0.0007/10/2025$11.81$11.79-0.21%$11.85$11.7853,661 shs$0.0007/09/2025$11.79$11.81+0.17%$11.85$11.8037,891 shs$0.0007/08/2025$11.79$11.79$11.84$11.78135,686 shs$0.0007/07/2025$11.83$11.79-0.34%$11.88$11.7975,895 shs$0.0007/04/2025$11.83$11.83$11.90$11.8345,302 shs$0.00 This page (NYSE:MIO) was last updated on 8/5/2025 by MarketBeat.com Staff From Our PartnersMan Who Called Nvidia at $1.10 Says Buy This Now...In 2004, one man called Nvidia before just about anyone knew it existed. 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