New Orleans-based First NBC Bank reported a slight drop in second-quarter earnings to $8.5 million, compared with $9.2 million for the same period in 2012.

The bank said its 2012 net income was affected by $1.8 million in securities gains taken during the quarter, as it took advantage of market opportunities associated with the European financial crisis.

Earnings per diluted share during the quarter were 48 cents, down from 65 cents in 2012. That comparison was affected by First NBCs initial public offering in May. The bank offered nearly 4.8 million shares.

First NBC’s assets were $3 billion at the end of June, compared to $2.4 billion in June 2012.