As Financial Industry Regulatory Authority fines soared 15 percent in 2012, the watchdog that oversees securities firms paid particular attention to the suitability of investment products, and to the due diligence performed by firms on those products, according to the latest analysis from Sutherland Asbill & Brennan.

Sutherland’s annual report on FINRA disciplinary actions finds that the regulator brought an increased number of cases for the fourth year in a row—filing 1,541 actions in 2012, up 3.6 percent from the 1,488 cases in 2011.