By Matt Robinson and Ben Bain, Bloomberg In its latest fiscal year, Wall Street’s top regulator sought the smallest amount of penalties since 2013, a drop that took place as the agency went months without permanent leadership and could show a softer approach to policing wrongdoing. The Securities and Exchange Commission tried to obtain $3.4 billion in fines and disgorgement from companies and individuals during the 12 months ended in September, according to data collected by Urska Velikonja, a Georgetown University law professor.