Security Trust & Savings Bank
Storm Lake, IA — State Member Bank
Active
Net Interest Margin Over Time
| Net Interest Margin | Security Trust & Savings Bank | All Insured Commercial Banks in Iowa |
| 12-31-2016 | 2.682 | 3.587 |
| 09-30-2016 | 2.721 | 3.602 |
| 06-30-2016 | 2.794 | 3.598 |
| 03-31-2016 | 2.84 | 3.601 |
| 12-31-2015 | 3.01 | 3.591 |
| 09-30-2015 | 2.964 | 3.588 |
| 06-30-2015 | 2.99 | 3.563 |
| 03-31-2015 | 3.03 | 3.541 |
| 12-31-2014 | 3.025 | 3.569 |
| 09-30-2014 | 3.032 | 3.552 |
| 06-30-2014 | 3.032 | 3.525 |
| 03-31-2014 | 3.034 | 3.52 |
| 12-31-2013 | 3.037 | 3.538 |
| 09-30-2013 | 3.03 | 3.526 |
| 06-30-2013 | 3.116 | 3.501 |
| 03-31-2013 | 3.155 | 3.488 |
| 12-31-2012 | 3.302 | 3.696 |
| 09-30-2012 | 3.349 | 3.722 |
| 06-30-2012 | 3.384 | 3.729 |
| 03-31-2012 | 3.433 | 3.767 |
| 12-31-2011 | 3.766 | 3.861 |
| 09-30-2011 | 3.819 | 3.865 |
| 06-30-2011 | 3.84 | 3.833 |
| 03-31-2011 | 3.863 | 3.808 |
| 12-31-2010 | 3.946 | 3.947 |
| 09-30-2010 | 3.93 | 3.957 |
| 06-30-2010 | 3.899 | 3.936 |
| 03-31-2010 | 3.953 | 3.922 |
| 12-31-2009 | 3.947 | 3.845 |
| 09-30-2009 | 3.914 | 3.829 |
| 06-30-2009 | 3.895 | 3.787 |
| 03-31-2009 | 3.947 | 3.796 |
| 12-31-2008 | 3.448 | 3.764 |
| 09-30-2008 | 3.313 | 3.732 |
| 06-30-2008 | 3.168 | 3.664 |
| 03-31-2008 | 2.999 | 3.658 |
| 12-31-2007 | 2.863 | 3.674 |
| 09-30-2007 | 2.807 | 3.667 |
| 06-30-2007 | 2.763 | 3.654 |
| 03-31-2007 | 2.706 | 3.624 |
| 12-31-2006 | 2.65 | 3.746 |
| 09-30-2006 | 2.682 | 3.762 |
| 06-30-2006 | 2.725 | 3.771 |
| 03-31-2006 | 2.747 | 3.763 |
| 12-31-2005 | 3.062 | 3.863 |
| 09-30-2005 | 2.901 | 3.877 |
| 06-30-2005 | 3.023 | 3.881 |
| 03-31-2005 | 3.225 | 3.865 |
| 12-31-2004 | 3.337 | 3.919 |
| 09-30-2004 | 3.337 | 3.912 |
| 06-30-2004 | 3.301 | 3.877 |
| 03-31-2004 | 3.367 | 3.885 |
| 12-31-2003 | 3.383 | 3.893 |
| 09-30-2003 | 3.398 | 3.9 |
| 06-30-2003 | 3.4 | 3.885 |
| 03-31-2003 | 3.354 | 3.897 |
| 12-31-2002 | 3.612 | 4.074 |