First Citizens Bank
Mason City, IA — State Member Bank
Active
Net Interest Margin Over Time
| Net Interest Margin | First Citizens Bank | All Insured Commercial Banks in Iowa |
| 12-31-2016 | 3.154 | 3.587 |
| 09-30-2016 | 3.202 | 3.602 |
| 06-30-2016 | 3.227 | 3.598 |
| 03-31-2016 | 3.242 | 3.601 |
| 12-31-2015 | 3.144 | 3.591 |
| 09-30-2015 | 3.124 | 3.588 |
| 06-30-2015 | 3.103 | 3.563 |
| 03-31-2015 | 3.079 | 3.541 |
| 12-31-2014 | 3.179 | 3.569 |
| 09-30-2014 | 3.226 | 3.552 |
| 06-30-2014 | 2.989 | 3.525 |
| 03-31-2014 | 2.974 | 3.52 |
| 12-31-2013 | 2.951 | 3.538 |
| 09-30-2013 | 2.953 | 3.526 |
| 06-30-2013 | 2.95 | 3.501 |
| 03-31-2013 | 2.937 | 3.488 |
| 12-31-2012 | 3.292 | 3.696 |
| 09-30-2012 | 3.382 | 3.722 |
| 06-30-2012 | 3.426 | 3.729 |
| 03-31-2012 | 3.508 | 3.767 |
| 12-31-2011 | 3.634 | 3.861 |
| 09-30-2011 | 3.699 | 3.865 |
| 06-30-2011 | 3.717 | 3.833 |
| 03-31-2011 | 3.687 | 3.808 |
| 12-31-2010 | 3.836 | 3.947 |
| 09-30-2010 | 3.888 | 3.957 |
| 06-30-2010 | 3.915 | 3.936 |
| 03-31-2010 | 3.869 | 3.922 |
| 12-31-2009 | 3.681 | 3.845 |
| 09-30-2009 | 3.648 | 3.829 |
| 06-30-2009 | 3.66 | 3.787 |
| 03-31-2009 | 3.689 | 3.796 |
| 12-31-2008 | 3.504 | 3.764 |
| 09-30-2008 | 3.468 | 3.732 |
| 06-30-2008 | 3.405 | 3.664 |
| 03-31-2008 | 3.267 | 3.658 |
| 12-31-2007 | 3 | 3.674 |
| 09-30-2007 | 2.965 | 3.667 |
| 06-30-2007 | 2.981 | 3.654 |
| 03-31-2007 | 2.929 | 3.624 |
| 12-31-2006 | 3.037 | 3.746 |
| 09-30-2006 | 3.053 | 3.762 |
| 06-30-2006 | 3.116 | 3.771 |
| 03-31-2006 | 3.139 | 3.763 |
| 12-31-2005 | 3.165 | 3.863 |
| 09-30-2005 | 3.159 | 3.877 |
| 06-30-2005 | 3.134 | 3.881 |
| 03-31-2005 | 3.147 | 3.865 |
| 12-31-2004 | 3.23 | 3.919 |
| 09-30-2004 | 3.265 | 3.912 |
| 06-30-2004 | 3.283 | 3.877 |
| 03-31-2004 | 3.306 | 3.885 |
| 12-31-2003 | 3.203 | 3.893 |
| 09-30-2003 | 3.162 | 3.9 |
| 06-30-2003 | 3.177 | 3.885 |
| 03-31-2003 | 3.15 | 3.897 |
| 12-31-2002 | 3.415 | 4.074 |