The Securities and Exchange Commission (SEC) over the last month has suspended trading on securities offered by 21 companies in reaction to market volatility caused by “apparent social media attempts to artificially inflate their stock price.”

Aaron Nicodemus is the Editor-in-Chief of Compliance Week. He previously worked as a reporter for Bloomberg Law and as business editor at the Telegram & Gazette in Worcester, Mass. Email: aaron.nicodemus@complianceweek.com LinkedIn:...