P/E ratio history for Northrop Grumman Corporation
| Date | Price-to-Earnings ratio | 
|---|---|
| 31 Dec 2023 | 34.50 | 
| 31 Dec 2022 | 17.26 | 
| 31 Dec 2021 | 8.86 | 
| 31 Dec 2020 | 15.97 | 
| 31 Dec 2019 | 25.90 | 
| 31 Dec 2018 | 13.17 | 
| 31 Dec 2017 | 26.56 | 
| 31 Dec 2016 | 18.91 | 
| 31 Dec 2015 | 17.97 | 
| 31 Dec 2014 | 14.87 | 
| 31 Dec 2013 | 13.48 | 
| 31 Dec 2012 | 8.49 | 
| 31 Dec 2011 | 7.64 | 
| 31 Dec 2010 | 8.50 | 
| 31 Dec 2009 | 9.59 | 
| 31 Dec 2008 | -10.83 | 
| 31 Dec 2007 | 13.62 | 
| 31 Dec 2006 | 13.77 | 
| 31 Dec 2005 | 13.89 | 
| 31 Dec 2004 | 16.36 | 
| 31 Dec 2003 | 20.27 | 
| 31 Dec 2002 | 154.62 | 
| 31 Dec 2001 | 18.33 | 
| 31 Dec 2000 | 8.77 | 
| 31 Dec 1999 | 7.29 | 
| 31 Dec 1998 | 23.44 | 
| 31 Dec 1997 | 17.10 | 
| 31 Dec 1996 | 20.07 | 
| 31 Dec 1995 | 13.48 | 
| 31 Dec 1994 | 41.41 | 
| 31 Dec 1993 | 16.62 | 
| 31 Dec 1992 | 12.09 | 
| 31 Dec 1991 | 4.19 | 
| 31 Dec 1990 | 3.52 | 
| 31 Dec 1989 | -9.54 | 
| 31 Dec 1988 | -38.74 | 
| 31 Dec 1987 | 11.51 | 
| 31 Dec 1986 | 40.00 | 
| 31 Dec 1985 | 8.64 | 
