The trading firm, which traded at CME, was unable to meet its capital requirements.

Hedge fund manager Citadel is suing firms and people in Europe for trademark infringement.

Ariel Investments President Mellody Hobson will become the first African-American woman to chair the Economic Club of Chicago.

Mark Walter, CEO of asset manager Guggenheim Partners LLC, eschewed the usual pricey corporate art when his firm remodeled a couple of years ago. Instead, he bought dinosaur fossils.

Tribune Co. employees suing over their collapsed employee stock ownership plan have won a partial victory in the case.

Morningstar Inc. shareholders attending the company's annual meeting in Chicago pressed for the start of a stock dividend, and CEO Joe Mansueto said it was under consideration.

CBOE Holdings Inc.'s public offering appears to be more about funneling cash to members and showcasing the biggest U.S. options exchange to potential buyers than about raising capital to help it compete in a cutthroat market.

With acquisition targets dwindling, competition increasing and regulatory threats looming, CME Group Inc. is hoping it can spark growth through new products and foreign partnerships.

A new futures exchange that will let investors bet on contracts tied to soon-to-be-released movies is making its home in Chicago.