This case involves a company that was fined $50 million by the Securities Exchange Commission for secretly trading its own program in its dark pool trading system. The Securities Exchange Commission found that the company misused information from its dark pool subscribers to implement high-frequency trades for its own benefit. The attorneys represented shareholders who were not made aware of the company’s activity for several years and suffered losses as a result. An expert in trading systems was sought to explain to a jury how dark pool trading systems work and the dangers of testing any sort of project within the system. The expert was also asked to comment on why the project would be of such critical concern to these clients and thus why the company should have initially disclosed its program to its subscribers.