SEC fines Athena Capital $ 1 Million:

Summary: " Athena an algorithmic, high-frequency trading firm in New York City, used complex computer programs to carry out a familiar, manipulative scheme: marking the closing price of public-listed securities. Through a sophisticated algorithm, Athena manipulated the closing price of thousands of NASDAQ-listed stocks over a six-month period."

Full article: https://www.sec.gov/litigation/admin/2014/34-73369.pdf