The Securities and Exchange Commission has updated the Financial Stability Oversight Council on possible changes to rules for money market mutual funds. Jack Lew, sworn in as U.S. Treasury secretary Thursday, leads the FSOC. The risk council also discussed the designation of nonbank financial companies as systemically important. Meanwhile, Sheila Bair, former head of the Federal Deposit Insurance Corp., has criticized regulators' process of determining whether a company is systemically important.