The second quarter of 2018 marked our 100th consecutive quarterly dividend. The second quarter of 2018 also provided an incredibly strong foundation to propel us into our next 100 quarters. We continued our progress toward a fortress balance sheet with net income of $4,597,000 compared to $2,932,000 for the second quarter of 2017, an increase of 57%. Our loan portfolio grew to a total of $1,174,141,000, $59.4 million more than June 30, 2017. Loan interest income for the second quarter of 2018 increased to $15,919,000 compared to $12,826,000 for the second quarter 2017, an increase of 24%. Our net interest margin grew to 3.44% compared to 3.33% as of June 30, 2017.
As we have acted decisively to increase loan interest income during the present rising interest rate market, yields have risen. The six month average loan yield for the first half of 2018 was 5.39% compared to 5.08% for the same period in 2017. For the second quarter of 2018, the average loan yield was 5.50% compared to 5.10% for the second quarter of 2017. In addition to increasing the yields, we have stressed floating rates on new loans and have been successful in moving loans from fixed rates to floating rates as loans mature or are otherwise changed in structure.
Retained earnings increased to $49,844,000 as of June 30, 2018 from $41,608,000 as of June 30, 2017. Our asset quality increased significantly as the non-performing assets decreased to $10,496,000 as of June 30, 2018 compared to $14,670,000 as of December 31, 2017. Likewise, the Texas ratio at the Holding Company level was an incredibly strong 6.76% compared to 14.34% as of June 30, 2017.
We are steadily and surely building a rock solid financial institution with strong capital, strong earnings, and good asset quality. We are steadily enhancing shareholder value through increased share value and dividend income.
We look forward to the next 100 quarters.
Thank you for your continued support.
Sincerely,
Alton B. Lewis
First Guaranty, Bancshares, Inc.