Monthly Returns (%)Northwest Natural Holding Company
| Years | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1994 | 0 | -0.7 | -5.6 | 1.4 | -8.1 | -3.3 | 0.6 | 2.5 | 5 | -4.9 | -4.1 | 2.6 | 0 |
| 1995 | 4.6 | -0.4 | 3.3 | 0.5 | -4.4 | 5.5 | 2.2 | -1.6 | 0 | 4.7 | 4.7 | -1.5 | 18.4 |
| 1996 | 2.1 | -0.7 | -3.8 | 3.8 | 5.3 | 2.2 | 0.2 | 2.6 | -2.8 | 11.6 | -1.4 | -4 | 15 |
| 1997 | 5.4 | -3 | 1.1 | 0.1 | 0.6 | 7.4 | 0.5 | -3.9 | 3 | -3.1 | 13.7 | 10.6 | 35.5 |
| 1998 | -13.1 | 5.8 | -0.2 | -2.9 | 1.9 | 1.7 | -5.1 | -7.1 | 13.5 | 1.9 | 1.8 | -8.8 | -12.6 |
| 1999 | -8.1 | 4.1 | -10.6 | 4.5 | 6.4 | 0.5 | 10.5 | -5.2 | 3.3 | 1.4 | -2.9 | -12.7 | -11 |
| 2000 | -5 | -4.9 | 0 | 14.5 | -1.1 | 2.9 | 3 | 1.2 | -1.1 | 4.5 | 2.4 | 10.5 | 28.2 |
| 2001 | -8.3 | 1.8 | -1.8 | -6.2 | 7.6 | 4.2 | -2.1 | 3.8 | -6.5 | 3.6 | 2.3 | 4.3 | 1.4 |
| 2002 | 3.8 | 0.7 | 5.8 | 3.1 | 3 | -1.7 | -1.2 | -0.1 | 4.6 | 3.2 | -14.6 | 5.7 | 11 |
| 2003 | -2.7 | -5.9 | 2.5 | 4.1 | 7.9 | -2.2 | 5.7 | 0.1 | 1.8 | 1.1 | 5.2 | 0.8 | 19.1 |
| 2004 | 1.2 | 3.8 | -2.3 | -4.9 | -1 | 4.8 | -2.6 | 4.9 | 2.9 | 1 | 6.8 | -0.3 | 14.4 |
| 2005 | 1.6 | 7.3 | -0.7 | -1 | 2 | 5.7 | 1.8 | -4.7 | 1.2 | -6.2 | -0.7 | -0.5 | 5.2 |
| 2006 | 5.1 | -3.8 | 3.7 | -1.7 | 1 | 6.2 | 3.5 | 0.7 | 2.7 | 6.2 | -0.3 | 2.9 | 28.9 |
| 2007 | -3.3 | 8.8 | 3.1 | 12.1 | -1.9 | -7.3 | -9 | 11.5 | -1.6 | 6.3 | -0.4 | 1.5 | 18.5 |
| 2008 | -2 | -11.2 | 3.3 | 4.2 | 1.6 | 1.5 | -1.4 | 7.7 | 6.7 | -1.4 | -1.8 | -11.5 | -6.1 |
| 2009 | -2.1 | -4.6 | 6 | -4.9 | 3.8 | 4.4 | 1.6 | -5.7 | -1 | 1.4 | 2.6 | 5 | 5.7 |
| 2010 | -2.8 | 1.4 | 5.9 | 2.6 | -7.2 | -0.9 | 9.8 | -4.2 | 4.4 | 4.8 | -1 | -4.8 | 6.9 |
| 2011 | -3.2 | 5.5 | -1.9 | 1.2 | -2.3 | -0.1 | -0.2 | 1.4 | -2.5 | 7 | 0.8 | 1.8 | 7.2 |
| 2012 | 0.1 | -3.7 | -0.8 | 1.7 | 1.4 | 2.7 | 3.2 | 1 | 0.2 | -4.6 | -5.7 | 0.8 | -4.2 |
| 2013 | 3.8 | 0.3 | -3.8 | 2.5 | -3.9 | -0.6 | 4.5 | -6.6 | 2.3 | 4.5 | -2.1 | 0.7 | 0.9 |
| 2014 | -1.8 | 3.2 | 2.6 | 1.7 | 2.2 | 4.2 | -7.4 | 5.2 | -7.1 | 12.2 | -0.9 | 7.3 | 21.5 |
| 2015 | 0.9 | -5.3 | 1.5 | -1.7 | -4.3 | -5.7 | 3.8 | 1.6 | 4.2 | 5.2 | 2.2 | 3.7 | 5.5 |
| 2016 | 3.6 | -4 | 7.9 | -3.4 | 6.5 | 18.1 | 0.9 | -8 | 0.6 | -1.4 | -2.6 | 4.4 | 22.2 |
| 2017 | -0.7 | 2 | -1.7 | 1.6 | 2.8 | -2.3 | 6.2 | 5.1 | -2.9 | 3.8 | 4.2 | -13.7 | 2.8 |
| 2018 | -3.1 | -9.1 | 10.6 | 7.2 | -2.5 | 6.7 | 2.9 | -0.4 | 3.1 | -2.5 | 2.4 | -8.9 | 4.5 |
| 2019 | 3.5 | 2.6 | 2.2 | 1.1 | 2.2 | 2.2 | 4 | -1.3 | 0.6 | -2 | -2.1 | 6.9 | 21.5 |
| 2020 | 0.2 | -9.5 | -7.4 | 5.4 | -1.5 | -13 | -4.1 | -4.5 | -12.1 | -1.1 | 7.8 | -4.3 | -37.6 |
| 2021 | 1.9 | 2.7 | 12.4 | -0.1 | -1.9 | -0.7 | -0.4 | -1.6 | -9.8 | -2.8 | -4.4 | 13.1 | 6.4 |
| 2022 | -3 | 9.9 | -0.6 | -7.5 | 12.7 | -1.5 | 1.3 | -11.5 | -9.8 | 12 | 4.2 | -5 | -2.4 |
| 2023 | 5.4 | -3.6 | -1.7 | -1.2 | -9.2 | 0.9 | -0.2 | -8.6 | -2.8 | -3.8 | -0.3 | 6.3 | -18.3 |
| 2024 | -5.4 | -0.2 | 1.3 | 1.3 | -0.9 | -4.5 | 12.1 | 0.3 | 0 | 0 | 0 | 0 | 1.6 |
| 2025 | 0.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.3 |