The Financial Industry Regulatory Authority (FINRA) on Wednesday ordered online stock-trading platform Robinhood Financial to pay a record-breaking $70 million in penalties, the result of “systemic supervisory failures in several critical parts of its business.”

Jaclyn Jaeger is a freelance contributor to Compliance Week after working for the company for 15 years. She writes on a wide variety of topics, including ethics and compliance, risk management, legal,...