Recent Quotes View Full List My Watchlist Create Watchlist Indicators DJI Nasdaq Composite SPX Gold Crude Oil Hydroworld Market Index Markets Stocks ETFs Tools Overview News Currencies International Treasuries Proofpoint Inc (NQ: PFPT ) N/A UNCHANGED Last Price Updated: Add to My Watchlist Quote Overview Detailed Quote Charting Historical Prices News All News News Headlines Press Releases Research Quarterly Reports Insider Filings Other Filings Historical Prices Month: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year: 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 Range: 1 Month 3 Month 1 Year Date Open High Low Close Volume Change (%) May 28, 2021 172.78 173.05 172.61 172.81 668,469 +0.03(+0.02%) May 27, 2021 171.18 173.06 171.00 172.78 1,893,309 +1.65(+0.96%) May 26, 2021 171.00 171.20 170.91 171.13 1,022,324 +0.30(+0.18%) May 25, 2021 172.20 172.20 170.72 170.83 1,450,247 -0.24(-0.14%) May 24, 2021 171.08 171.39 170.90 171.07 2,237,744 -0.09(-0.05%) May 21, 2021 171.21 171.54 170.95 171.16 1,411,452 +0.35(+0.20%) May 20, 2021 171.10 171.46 170.80 170.81 1,619,200 -0.09(-0.05%) May 19, 2021 171.05 171.45 170.69 170.90 1,701,883 -0.17(-0.10%) May 18, 2021 171.96 172.10 171.05 171.07 2,204,419 -0.80(-0.47%) May 17, 2021 171.66 172.41 171.39 171.87 1,707,572 +0.10(+0.06%) May 14, 2021 171.47 171.99 171.13 171.77 1,546,175 +0.85(+0.50%) May 13, 2021 171.50 171.97 170.75 170.92 2,836,894 -0.18(-0.11%) May 12, 2021 170.90 172.15 170.44 171.10 3,328,856 +0.20(+0.12%) May 11, 2021 171.42 171.78 170.70 170.90 4,786,267 -0.42(-0.25%) May 10, 2021 172.35 172.66 171.19 171.32 4,547,831 -1.03(-0.60%) May 07, 2021 172.00 172.89 171.74 172.35 2,783,543 +0.55(+0.32%) May 06, 2021 172.00 172.18 171.53 171.80 3,367,942 -0.16(-0.09%) May 05, 2021 171.97 172.40 171.74 171.96 3,433,363 +0.22(+0.13%) May 04, 2021 172.14 172.26 171.71 171.74 6,505,231 -0.27(-0.16%) Data & News supplied by www.cloudquote.io Stock quotes supplied by Barchart Quotes delayed at least 20 minutes. By accessing this page, you agree to the following Privacy Policy and Terms and Conditions.