Investment Trading Group disclosed it had set aside more than US $20 million for a “probable settlement” with the Securities and Exchange Commission related to an investigation into the trading activities of its private stock trading platform – a so-called “dark pool.” According to a press release issued by ITG, the SEC’s investigation focused on a proprietary trading pilot operated within its AlterNet subsidiary for 16 months from 2010 through mid-2011. The firm said the investigation principally involved customer disclosures, regulatory filings with the SEC and customer information breaches related to the pilot’s trading activity for 16 months from 2010 through mid-2011. ITG and AlterNet are registered broker-dealers with the SEC and members of the Financial Industry Regulatory Authority.