The Chicago Board of Trade will add a three-hour Sunday evening trading session to its current schedule of four trading nights per week, beginning Sunday . . . The Investment Company Institute reported a $1.3-billion rise in money-market fund assets during the week ended Wednesday, bringing total assets to $235.1 billion . . . Macmillan Inc., New York, said it has acquired a 6.6% stake in Bell & Howell Co. and might eventually seek control of the company or representation on its board . . . Shreveport, La.-based Royale Airlines filed for reorganization under Chapter 11 of the U.S. Bankruptcy Code after a Citicorp unit seized four mortgaged planes to secure loans.