Sentinel Management Group was a cash-management firm based in Northbrook, Illinois. Sentinel invested for clients such as managed-futures funds, high-net-worth individuals and hedge funds that want to be able to withdraw their cash quickly. Investments included short-term commercial paper, foreign currency, investment-grade bonds and Treasury notes, according to the Web site. They oversaw approximately $1.6 billion. It was founded by Philip Bloom and the CEO was his son, Eric A. Bloom.